ASTROSAT CZTI

Data Quality Report

Orbit 59281

Creation date: 2026-09-11T21:12:17.121363
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_021T06_9000006606_59281cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59281cztM0_level2_quad_clean.evt
Size (bytes)767,260,80073,059,840
Size731.7 MB 69.7 MB
Events in quadrant A3,301,536626,236
Events in quadrant B3,297,343671,426
Events in quadrant C8,396,665309,184
Events in quadrant D12,923,769172,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142941
B0141461
C0291881
D0427291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61991272.048718%
B62001692.725806%
C6200319451.516129%
D6200457373.758065%

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 7299 6200 65 65 0.89% 1.05%
B 7300 6201 76 76 1.04% 1.23%
C 7299 6199 1575 1575 21.58% 25.41%
D 7300 6201 3899 3899 53.41% 62.88%

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 10 251 453285 2704.83 677 660 167.3
A 14 238 145673 866.58 677 660 167.3
A 3 14 17158 98.59 677 660 167.3
B 10 31 167952 1194.48 668 645 140.1
B 4 201 153570 1091.8 668 645 140.1
B 6 255 81052 574.06 668 645 140.1
C 15 198 6197947 50009.69 449 442 123.9
C 14 254 120681 970.25 449 442 123.9
C 12 252 90019 722.83 449 442 123.9
D 12 110 8998105 66536.98 467 445 135.2
D 2 62 790347 5841.26 467 445 135.2
D 2 249 499873 3693.23 467 445 135.2

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