ASTROSAT CZTI

Data Quality Report

Orbit 57890

Creation date: 2026-06-10T07:50:08.650486
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_125T11_9000006582_57890cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57890cztM0_level2_quad_clean.evt
Size (bytes)602,962,56086,469,120
Size575.0 MB 82.5 MB
Events in quadrant A2,845,419641,298
Events in quadrant B3,105,652682,569
Events in quadrant C4,142,559587,667
Events in quadrant D11,702,445237,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138231
B0142251
C0173021
D0395823

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6725540.802974%
B6726901.338091%
C67262533.761522%
D6725395558.810409%

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 7515 6726 4 4 0.05% 0.06%
B 7516 6727 7 7 0.09% 0.10%
C 7516 6727 144 144 1.92% 2.14%
D 7515 6726 3861 3861 51.38% 57.40%

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 4 236 54496 309.31 708 690 174.0
A 3 245 20297 112.71 708 690 174.0
A 7 64 17525 96.78 708 690 174.0
B 5 172 110166 740.15 700 673 147.9
B 7 252 34121 226.1 700 673 147.9
B 0 63 26089 171.81 700 673 147.9
C 9 38 1065313 5755.53 678 669 185.0
C 15 224 261142 1408.13 678 669 185.0
C 15 208 65342 349.63 678 669 185.0
D 12 110 8857272 58407.96 534 506 151.6
D 8 160 292510 1925.69 534 506 151.6
D 8 240 176848 1162.93 534 506 151.6

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