ASTROSAT CZTI

Data Quality Report

Orbit 59002

Creation date: 2026-08-24T04:18:54.791358
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_004T07_9000006598_59002cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_59002cztM0_level2_quad_clean.evt
Size (bytes)748,946,88085,037,760
Size714.3 MB 81.1 MB
Events in quadrant A5,876,976588,398
Events in quadrant B3,809,865686,297
Events in quadrant C3,531,875618,404
Events in quadrant D13,978,433208,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221442
B0160452
C0153512
D0460023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678479911.777712%
B67842323.419811%
C67841562.299528%
D6783445365.649418%

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 7704 6785 681 681 8.84% 10.04%
B 7704 6784 131 131 1.70% 1.93%
C 7704 6785 142 142 1.84% 2.09%
D 7702 6782 4392 4392 57.02% 64.76%

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 14 238 1769778 10115.69 699 681 174.9
A 0 24 825143 4714.27 699 681 174.9
A 15 233 210030 1197.06 699 681 174.9
B 2 249 402549 2572.19 725 698 156.2
B 6 255 163838 1044.24 725 698 156.2
B 8 234 154919 987.15 725 698 156.2
C 15 219 483337 2438.16 721 715 197.9
C 1 243 103427 518.89 721 715 197.9
C 6 223 38870 192.76 721 715 197.9
D 12 110 11956187 94444.34 442 422 126.6
D 12 248 90959 715.2 442 422 126.6
D 12 2 43184 337.8 442 422 126.6

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