ASTROSAT CZTI

Data Quality Report

Orbit 20191121_T03_149T05_9000003324_level2

Creation date: 2025-12-06T00:39:58.570672
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/AS1T03_149T05_9000003324cztM0_level2.fits modeM0/AS1T03_149T05_9000003324cztM0_level2_quad_clean.evt
Size (bytes)81,616,32067,625,280
Size77.8 MB 64.5 MB
Events in quadrant A496,806384,224
Events in quadrant B481,358387,630
Events in quadrant C489,476364,005
Events in quadrant D430,448337,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170650
B0176880
C0171030
D0172530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8267340.411274%
B8267600.725777%
C82671231.487843%
D8267310.374985%

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 13852 8268 0 0 0.00% 0.00%
B 13852 8268 0 0 0.00% 0.00%
C 13852 8267 0 0 0.00% 0.00%
D 13852 8268 0 0 0.00% 0.00%

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 0 29 439 9.35 129 121 34.0
A 7 110 395 8.05 129 121 34.0
A 9 19 394 8.02 129 121 34.0
B 2 9 357 8.48 127 121 27.8
B 5 232 349 8.19 127 121 27.8
B 5 128 334 7.65 127 121 27.8
C 1 81 383 7.66 129 121 34.2
C 1 80 376 7.46 129 121 34.2
C 3 158 364 7.1 129 121 34.2
D 6 67 348 6.88 122 112 34.3
D 3 14 319 6.04 122 112 34.3
D 1 31 305 5.63 122 112 34.3

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