ASTROSAT CZTI

Data Quality Report

Orbit 20160207_T01_052T01_9000000316_level2

Creation date: 2025-10-27T15:11:06.394697
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T01_052T01_9000000316cztM0_level2.fits modeM0/AS1T01_052T01_9000000316cztM0_level2_quad_clean.evt
Size (bytes)1,060,015,680852,577,920
Size1010.9 MB 813.1 MB
Events in quadrant A6,192,0144,530,483
Events in quadrant B6,207,4504,652,567
Events in quadrant C6,127,5124,395,099
Events in quadrant D5,144,9243,811,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05475480
B05479860
C05211400
D05354780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024620
B024620
C024620
D024620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140156590999592140153372803118
B1140156590999592140153372803118
C1140156590999592140153372803118
D1140156590999592140153372803118

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12298717081.388765%
B1229817640.621234%
C1229814410.358592%
D12298152924.303104%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 143101 122981 0 0 0.00% 0.00%
B 143101 122984 0 0 0.00% 0.00%
C 143101 122986 0 0 0.00% 0.00%
D 143101 122746 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 29 5838 11.61 1599 1491 374.6
A 14 188 5761 11.4 1599 1491 374.6
A 7 110 5572 10.9 1599 1491 374.6
B 2 9 4904 11.17 1639 1552 300.0
B 5 128 4226 8.91 1639 1552 300.0
B 10 225 4024 8.24 1639 1552 300.0
C 12 241 4215 6.92 1616 1495 393.3
C 2 191 4031 6.45 1616 1495 393.3
C 1 81 4031 6.45 1616 1495 393.3
D 6 44 3714 6.85 1467 1341 346.6
D 1 19 3622 6.58 1467 1341 346.6
D 3 30 3575 6.45 1467 1341 346.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter