ASTROSAT CZTI

Data Quality Report

Orbit 50126

Creation date: 2025-01-04T18:39:26.874267
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_003T01_9000006442_50126cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50126cztM0_level2_quad_clean.evt
Size (bytes)1,192,996,80044,527,680
Size1.1 GB 42.5 MB
Events in quadrant A15,384,0617,405
Events in quadrant B3,471,700588,652
Events in quadrant C12,628,095117,507
Events in quadrant D12,217,360217,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498167
B0145591
C0415911
D0403471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968591199.044906%
B59681893.166890%
C5968485481.333780%
D5969367561.568102%

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 6878 5968 5480 5480 79.67% 91.82%
B 6878 5969 67 67 0.97% 1.12%
C 6878 5967 3564 3564 51.82% 59.73%
D 6879 5969 3404 3404 49.48% 57.03%

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 6 250 11619025 162279.44 263 255 71.6
A 4 13 1659924 23180.61 263 255 71.6
A 0 98 421670 5885.91 263 255 71.6
B 5 185 330126 2542.17 607 586 129.6
B 4 170 179111 1377.19 607 586 129.6
B 0 229 74549 570.57 607 586 129.6
C 4 111 7039669 91289.36 275 273 77.1
C 15 230 1202598 15592.17 275 273 77.1
C 15 197 1159156 15028.8 275 273 77.1
D 15 168 3163366 23425.01 439 420 135.0
D 15 107 1039599 7696.24 439 420 135.0
D 15 106 811237 6004.97 439 420 135.0

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