ASTROSAT CZTI

Data Quality Report

Orbit 20190428_A05_104T05_9000002860_level2

Creation date: 2025-11-29T16:14:58.817057
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/AS1A05_104T05_9000002860cztM0_level2.fits modeM0/AS1A05_104T05_9000002860cztM0_level2_quad_clean.evt
Size (bytes)137,174,40056,139,840
Size130.8 MB 53.5 MB
Events in quadrant A889,896221,721
Events in quadrant B859,334223,161
Events in quadrant C882,288218,178
Events in quadrant D669,186182,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272310
B0271880
C0273330
D0646640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123421731.401718%
B123361951.580739%
C123392221.799173%
D12303351228.545883%

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 15079 12363 0 0 0.00% 0.00%
B 15079 12355 0 0 0.00% 0.00%
C 15079 12361 0 0 0.00% 0.00%
D 15079 12300 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 29 800 10.14 231 219 57.3
A 7 110 719 8.72 231 219 57.3
A 0 30 638 7.31 231 219 57.3
B 2 9 682 10.0 226 217 46.5
B 2 8 578 7.76 226 217 46.5
B 5 255 564 7.46 226 217 46.5
C 3 202 670 7.41 232 220 60.7
C 1 80 641 6.93 232 220 60.7
C 1 81 631 6.77 232 220 60.7
D 3 14 497 6.23 190 175 51.7
D 7 3 490 6.1 190 175 51.7
D 6 231 487 6.04 190 175 51.7

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