ASTROSAT CZTI

Data Quality Report

Orbit 53650

Creation date: 2025-08-29T01:10:08.350846
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_022T05_9000006504_53650cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53650cztM0_level2_quad_clean.evt
Size (bytes)992,456,64096,537,600
Size946.5 MB 92.1 MB
Events in quadrant A10,661,772528,624
Events in quadrant B5,142,178795,173
Events in quadrant C13,551,281406,391
Events in quadrant D6,770,842642,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371520
B0208140
C0456940
D0256427

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7911266433.674630%
B79111872.363797%
C7912374347.307887%
D79116858.658829%

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 7911 7911 2150 2150 27.18% 27.18%
B 7911 7911 110 110 1.39% 1.39%
C 7912 7912 3330 3330 42.09% 42.09%
D 7912 7912 601 601 7.60% 7.60%

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 3 78 5360258 29546.33 728 711 181.4
A 3 63 1352800 7453.85 728 711 181.4
A 10 253 472886 2603.03 728 711 181.4
B 5 172 491609 2727.39 837 806 180.0
B 7 0 490944 2723.69 837 806 180.0
B 5 185 460888 2556.67 837 806 180.0
C 1 241 5812717 34511.12 600 594 168.4
C 15 224 3472351 20614.54 600 594 168.4
C 10 22 508673 3016.86 600 594 168.4
D 8 176 1749693 7365.23 811 774 237.5
D 10 172 356535 1498.22 811 774 237.5
D 13 153 336928 1415.65 811 774 237.5

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