ASTROSAT CZTI

Data Quality Report

Orbit 26501

Creation date: 2024-06-27T19:29:49.158092
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/AS1C05_017T01_9000003836_26501cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26501cztM0_level2_quad_clean.evt
Size (bytes)3,006,213,120436,910,400
Size2.8 GB 416.7 MB
Events in quadrant A16,363,3782,845,554
Events in quadrant B17,001,4192,880,670
Events in quadrant C19,930,3862,711,928
Events in quadrant D35,523,5692,522,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511
B0511
C0510
D0512

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0689300
B0705370
C0803130
D01279350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330702690.813426%
B330763671.109566%
C3306910313.117724%
D33070516115.606290%

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 38067 33092 0 0 0.00% 0.00%
B 38068 33092 33 33 0.09% 0.10%
C 38068 33080 354 354 0.93% 1.07%
D 38068 33091 4370 4370 11.48% 13.21%

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 13 254 53261 57.93 4244 4168 847.5
A 3 137 37554 39.39 4244 4168 847.5
A 0 226 36116 37.7 4244 4168 847.5
B 0 190 198179 246.31 4206 4113 787.9
B 15 222 131356 161.5 4206 4113 787.9
B 12 111 94179 114.31 4206 4113 787.9
C 3 233 1852272 1981.2 4002 4048 932.9
C 4 254 1425341 1523.55 4002 4048 932.9
C 14 238 640745 682.51 4002 4048 932.9
D 1 52 15006207 16203.79 3882 3800 925.9
D 12 233 4530480 4889.17 3882 3800 925.9
D 7 80 785437 844.23 3882 3800 925.9

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