ASTROSAT CZTI

Data Quality Report

Orbit 42124

Creation date: 2024-06-27T22:37:13.734775
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/AS1A12_061T07_9000005752_42124cztM0_level2.fits modeM0/AS1A12_061T07_9000005752_42124cztM0_level2_quad_clean.evt
Size (bytes)622,658,880176,235,840
Size593.8 MB 168.1 MB
Events in quadrant A5,573,8791,188,254
Events in quadrant B5,550,7731,211,588
Events in quadrant C5,080,7261,154,033
Events in quadrant D6,022,0971,049,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227833
B0235903
C0216533
D0253184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10585190.179499%
B10585950.897496%
C10585100.094473%
D105842482.343159%

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 15695 10588 4 4 0.03% 0.04%
B 15695 10588 48 48 0.31% 0.45%
C 15695 10588 8 8 0.05% 0.08%
D 15694 10587 207 207 1.32% 1.96%

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 10 83 947014 3906.99 1185 1161 242.1
A 12 189 25443 100.3 1185 1161 242.1
A 13 6 16843 64.78 1185 1161 242.1
B 5 255 633237 2822.67 1173 1142 223.9
B 4 81 214146 951.19 1173 1142 223.9
B 3 112 43770 190.36 1173 1142 223.9
C 15 214 436061 1613.42 1154 1159 269.6
C 8 79 117969 433.35 1154 1159 269.6
C 15 159 28346 100.86 1154 1159 269.6
D 13 249 469774 1696.44 1140 1107 276.3
D 1 52 468212 1690.78 1140 1107 276.3
D 12 6 444801 1606.04 1140 1107 276.3

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