ASTROSAT CZTI

Data Quality Report

Orbit 58790

Creation date: 2026-08-09T21:13:50.240592
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/AS1A14_106T01_9000006596_58790cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58790cztM0_level2_quad_clean.evt
Size (bytes)648,106,56077,005,440
Size618.1 MB 73.4 MB
Events in quadrant A4,237,653568,772
Events in quadrant B3,305,975628,151
Events in quadrant C3,316,298560,623
Events in quadrant D12,673,133162,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166571
B0138311
C0139721
D0415761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58853966.728972%
B58861352.293578%
C58861472.497452%
D5886438974.566769%

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 6965 5885 339 339 4.87% 5.76%
B 6966 5887 37 37 0.53% 0.63%
C 6966 5886 69 69 0.99% 1.17%
D 6965 5885 4069 4069 58.42% 69.14%

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 15 233 895520 5452.86 656 639 164.1
A 7 64 572624 3485.33 656 639 164.1
A 13 248 73583 444.48 656 639 164.1
B 4 171 192631 1379.29 652 629 139.2
B 10 247 130520 933.1 652 629 139.2
B 0 63 69235 492.85 652 629 139.2
C 13 3 205696 1157.26 642 637 177.2
C 6 223 191356 1076.33 642 637 177.2
C 6 13 131754 739.96 642 637 177.2
D 12 110 6149071 50446.7 423 405 121.9
D 11 129 2393534 19634.41 423 405 121.9
D 13 138 2030324 16654.46 423 405 121.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct