ASTROSAT CZTI

Data Quality Report

Orbit 56405

Creation date: 2026-03-02T12:32:52.115923
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_083T05_9000006554_56405cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56405cztM0_level2_quad_clean.evt
Size (bytes)842,365,44056,119,680
Size803.3 MB 53.5 MB
Events in quadrant A12,577,237303,369
Events in quadrant B5,190,922466,816
Events in quadrant C3,667,567502,381
Events in quadrant D9,277,0181,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414470
B0195640
C0151290
D0317680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013417469.416265%
B6013178429.669050%
C60141572.610575%
D60146014100.000000%

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 7432 6169 3622 3622 48.74% 58.71%
B 7432 6025 373 373 5.02% 6.19%
C 7433 6288 118 118 1.59% 1.88%
D 7432 6038 1747 1747 23.51% 28.93%

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 12 3 4715178 47558.47 392 381 99.1
A 4 95 2023539 20407.73 392 381 99.1
A 3 79 1860901 18767.19 392 381 99.1
B 4 206 1500521 13934.61 507 490 107.6
B 5 172 1282358 11907.98 507 490 107.6
B 0 213 132303 1224.48 507 490 107.6
C 12 254 895705 5111.69 645 639 175.1
C 9 237 91197 517.17 645 639 175.1
C 6 223 43183 242.97 645 639 175.1
D 8 129 9177683 1276046.72 20 19 7.2
D 2 249 5744 795.99 20 19 7.2
D 2 120 2532 349.4 20 19 7.2

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