ASTROSAT CZTI

Data Quality Report

Orbit 26020

Creation date: 2024-06-27T19:23:55.315837
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/AS1A07_068T01_9000003760_26020cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26020cztM0_level2_quad_clean.evt
Size (bytes)510,923,52065,525,760
Size487.3 MB 62.5 MB
Events in quadrant A3,205,677395,281
Events in quadrant B3,184,508396,241
Events in quadrant C3,062,171379,798
Events in quadrant D5,582,815362,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135270
B0134430
C0131430
D0207810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6453610.945297%
B6453600.929800%
C6453811.255230%
D64546379.869848%

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 7368 6453 15 15 0.20% 0.23%
B 7368 6453 1 1 0.01% 0.02%
C 7368 6453 0 0 0.00% 0.00%
D 7369 6454 556 556 7.55% 8.61%

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 13 146101 909.95 791 773 159.7
A 13 254 9741 56.15 791 773 159.7
A 6 16 8615 49.1 791 773 159.7
B 15 222 77495 508.39 784 765 150.9
B 12 111 18622 118.31 784 765 150.9
B 11 111 16702 105.59 784 765 150.9
C 14 238 123033 694.48 753 757 176.1
C 3 233 6824 34.46 753 757 176.1
C 13 61 5134 24.86 753 757 176.1
D 1 52 1110959 6286.08 735 719 176.6
D 12 2 852198 4821.0 735 719 176.6
D 7 223 685023 3874.47 735 719 176.6

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