ASTROSAT CZTI

Data Quality Report

Orbit 52309

Creation date: 2025-07-22T16:19:04.101147
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/AS1C09_011T05_9000006474_52309cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52309cztM0_level2_quad_clean.evt
Size (bytes)394,211,52038,260,800
Size375.9 MB 36.5 MB
Events in quadrant A1,722,665299,068
Events in quadrant B2,492,619316,222
Events in quadrant C5,882,38799,939
Events in quadrant D4,250,092219,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07765487
B010316702
C0209381311
D015750932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0733
B0734
C0733
D0722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3142912.896244%
B31281394.443734%
C3130218269.712460%
D313072723.226837%

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 6278 3162 36 36 0.57% 1.14%
B 6250 3144 70 70 1.12% 2.23%
C 6248 3137 1654 1654 26.47% 52.73%
D 6255 3142 714 714 11.41% 22.72%

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 5 240 107605 1304.88 326 318 82.2
A 11 3 89799 1088.32 326 318 82.2
A 12 3 79444 962.37 326 318 82.2
B 10 254 679113 9877.94 321 311 68.7
B 4 171 170372 2474.73 321 311 68.7
B 0 216 88507 1283.43 321 311 68.7
C 0 161 2542846 50824.65 178 176 50.0
C 15 224 1117326 22330.37 178 176 50.0
C 9 38 786717 15721.93 178 176 50.0
D 15 93 1324725 15743.8 290 276 84.1
D 12 2 509901 6057.94 290 276 84.1
D 13 84 368310 4374.84 290 276 84.1

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