ASTROSAT CZTI

Data Quality Report

Orbit 20220818_A10_094T07_9000005290_level2

Creation date: 2026-01-04T05:56:17.789271
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/AS1A10_094T07_9000005290cztM0_level2.fits modeM0/AS1A10_094T07_9000005290cztM0_level2_quad_clean.evt
Size (bytes)35,017,92044,084,160
Size33.4 MB 42.0 MB
Events in quadrant A203,602265,187
Events in quadrant B201,320279,935
Events in quadrant C202,814268,162
Events in quadrant D177,044245,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095770
B090410
C088390
D098930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39002175.564103%
B3900240.615385%
C3900641.641026%
D39001473.769231%

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 5543 3869 0 0 0.00% 0.00%
B 5543 3900 0 0 0.00% 0.00%
C 5543 3900 0 0 0.00% 0.00%
D 5543 3899 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 29 170 8.05 53 50 14.9
A 7 110 161 7.45 53 50 14.9
A 14 95 158 7.25 53 50 14.9
B 2 9 185 10.64 53 51 12.6
B 3 80 172 9.61 53 51 12.6
B 2 8 147 7.63 53 51 12.6
C 1 80 160 7.1 53 50 15.5
C 1 81 153 6.65 53 50 15.5
C 2 31 152 6.58 53 50 15.5
D 1 3 143 6.28 50 46 15.4
D 6 231 141 6.15 50 46 15.4
D 10 189 138 5.96 50 46 15.4

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