ASTROSAT CZTI

Data Quality Report

Orbit 38180

Creation date: 2024-06-27T21:49:25.201414
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_145T01_9000005370_38180cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38180cztM0_level2_quad_clean.evt
Size (bytes)694,396,800176,054,400
Size662.2 MB 167.9 MB
Events in quadrant A5,403,4731,206,142
Events in quadrant B4,956,0791,227,232
Events in quadrant C5,984,2771,148,810
Events in quadrant D8,531,6781,008,172

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224563
B0219332
C0242692
D0324582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10688220.205838%
B10688460.430389%
C106882101.964820%
D106888327.784431%

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 13405 10690 4 4 0.03% 0.04%
B 13405 10688 41 41 0.31% 0.38%
C 13405 10688 210 210 1.57% 1.96%
D 13405 10688 854 854 6.37% 7.99%

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 641787 2656.97 1198 1173 241.1
A 12 189 64503 262.66 1198 1173 241.1
A 9 143 47685 192.91 1198 1173 241.1
B 5 172 81404 349.9 1190 1159 229.3
B 15 85 60886 260.43 1190 1159 229.3
B 0 230 50318 214.35 1190 1159 229.3
C 14 254 860040 3192.89 1159 1165 269.0
C 15 214 435037 1612.93 1159 1165 269.0
C 1 23 85175 312.31 1159 1165 269.0
D 12 227 1804885 6635.14 1127 1096 271.9
D 12 235 1116124 4101.57 1127 1096 271.9
D 12 233 387712 1422.15 1127 1096 271.9

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