ASTROSAT CZTI

Data Quality Report

Orbit 20220629_T05_035T01_9000005214_level2

Creation date: 2026-01-03T13:48:38.261856
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/AS1T05_035T01_9000005214cztM0_level2.fits modeM0/AS1T05_035T01_9000005214cztM0_level2_quad_clean.evt
Size (bytes)680,500,800660,746,880
Size649.0 MB 630.1 MB
Events in quadrant A4,264,7364,097,990
Events in quadrant B4,009,5783,992,351
Events in quadrant C4,112,6663,870,363
Events in quadrant D3,409,7483,239,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01489360
B01682950
C01509680
D02285910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014340
B014340
C014340
D014340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02810
B02810
C02810
D02810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701482030.289388%
B7014813351.903119%
C701485280.752694%
D7014864619.210526%

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 98175 70148 0 0 0.00% 0.00%
B 98175 70144 0 0 0.00% 0.00%
C 98175 70134 0 0 0.00% 0.00%
D 98175 70059 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 7 110 3472 8.94 1113 1048 271.2
A 9 19 3340 8.45 1113 1048 271.2
A 0 29 3303 8.31 1113 1048 271.2
B 2 9 3450 11.79 1062 1016 206.5
B 3 80 2985 9.54 1062 1016 206.5
B 2 8 2823 8.75 1062 1016 206.5
C 1 81 3402 8.61 1085 1020 276.7
C 1 80 3254 8.07 1085 1020 276.7
C 3 203 3231 7.99 1085 1020 276.7
D 10 189 2570 6.6 977 894 253.9
D 7 3 2566 6.59 977 894 253.9
D 6 38 2493 6.3 977 894 253.9

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