ASTROSAT CZTI

Data Quality Report

Orbit 20201123_A10_048T01_9000004028_level2

Creation date: 2025-12-17T21:36:08.083002
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/AS1A10_048T01_9000004028cztM0_level2.fits modeM0/AS1A10_048T01_9000004028cztM0_level2_quad_clean.evt
Size (bytes)670,034,880593,933,760
Size639.0 MB 566.4 MB
Events in quadrant A4,211,1603,610,837
Events in quadrant B4,025,9583,580,896
Events in quadrant C4,009,5623,321,791
Events in quadrant D3,392,8222,821,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01446670
B01448370
C01447150
D02070060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013780
B013780
C013780
D013780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678186620.976142%
B678188371.234186%
C6781810751.585125%
D6781866799.848418%

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 86777 67810 0 0 0.00% 0.00%
B 86777 67808 0 0 0.00% 0.00%
C 86777 67810 0 0 0.00% 0.00%
D 86777 67609 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 4167 11.82 1097 1031 265.4
A 7 110 3348 8.73 1097 1031 265.4
A 0 30 3160 8.02 1097 1031 265.4
B 2 9 3146 10.23 1064 1020 207.7
B 5 128 2672 7.95 1064 1020 207.7
B 2 8 2640 7.8 1064 1020 207.7
C 12 241 2854 6.93 1060 992 268.6
C 3 126 2767 6.61 1060 992 268.6
C 7 111 2664 6.22 1060 992 268.6
D 4 246 2633 6.84 968 884 255.8
D 6 231 2483 6.25 968 884 255.8
D 15 46 2388 5.88 968 884 255.8

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