ASTROSAT CZTI

Data Quality Report

Orbit 56714

Creation date: 2026-03-23T05:21:26.029930
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/AS1A14_083T06_9000006558_56714cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56714cztM0_level2_quad_clean.evt
Size (bytes)524,131,200112,052,160
Size499.9 MB 106.9 MB
Events in quadrant A5,578,692714,807
Events in quadrant B3,771,114790,819
Events in quadrant C5,364,454678,316
Events in quadrant D4,088,182672,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222132
B0168882
C0216162
D0181292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77106198.028534%
B77101541.997406%
C77104746.147860%
D77101682.178988%

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 7870 7711 444 444 5.64% 5.76%
B 7870 7711 45 45 0.57% 0.58%
C 7870 7711 364 364 4.63% 4.72%
D 7870 7711 121 121 1.54% 1.57%

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 3 62 1044595 5136.82 812 790 203.2
A 8 26 871807 4286.49 812 790 203.2
A 10 251 393299 1931.63 812 790 203.2
B 0 213 197920 1127.57 819 788 174.8
B 10 247 86112 488.04 819 788 174.8
B 0 63 75174 425.48 819 788 174.8
C 13 3 1684268 7752.31 781 771 217.2
C 12 249 158892 728.13 781 771 217.2
C 14 96 123391 564.65 781 771 217.2
D 2 249 667711 2919.61 798 763 228.4
D 13 153 65739 284.44 798 763 228.4
D 5 173 62234 269.09 798 763 228.4

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