ASTROSAT CZTI

Data Quality Report

Orbit 58919

Creation date: 2026-08-18T13:13:41.963591
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_58919cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58919cztM0_level2_quad_clean.evt
Size (bytes)711,875,52088,323,840
Size678.9 MB 84.2 MB
Events in quadrant A10,404,716381,599
Events in quadrant B3,634,037709,439
Events in quadrant C3,847,424629,592
Events in quadrant D7,966,404505,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352895
B0151062
C0157892
D0281722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434307947.855145%
B64342363.668014%
C64351983.076923%
D6435113517.637918%

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 8794 6436 2514 2514 28.59% 39.06%
B 8794 6436 108 108 1.23% 1.68%
C 8795 6437 138 138 1.57% 2.14%
D 8795 6437 935 935 10.63% 14.53%

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 4453698 31914.15 566 551 139.5
A 15 233 3657814 26210.33 566 551 139.5
A 13 248 41866 296.09 566 551 139.5
B 4 171 279318 1746.6 739 711 159.5
B 4 236 128374 800.32 739 711 159.5
B 4 201 113384 706.35 739 711 159.5
C 13 3 366967 1861.12 718 712 196.8
C 12 252 308613 1564.6 718 712 196.8
C 6 223 180796 915.09 718 712 196.8
D 12 110 4846101 24960.63 681 652 194.1
D 7 222 95962 490.98 681 652 194.1
D 5 32 72794 371.63 681 652 194.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct