ASTROSAT CZTI

Data Quality Report

Orbit 20210801_C06_002T03_9000004610_level2

Creation date: 2025-12-28T02:26:07.345076
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/AS1C06_002T03_9000004610cztM0_level2.fits modeM0/AS1C06_002T03_9000004610cztM0_level2_quad_clean.evt
Size (bytes)712,676,160928,324,800
Size679.7 MB 885.3 MB
Events in quadrant A4,198,6625,692,906
Events in quadrant B4,219,1956,081,024
Events in quadrant C4,291,4705,970,212
Events in quadrant D3,610,4265,120,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02190720
B02533530
C01913580
D02837410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015680
B015740
C015640
D015700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A765741007013.150678%
B7650536184.729103%
C7672945385.914322%
D76470786510.285079%

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 94871 76340 0 0 0.00% 0.00%
B 94871 76585 0 0 0.00% 0.00%
C 94871 76813 0 0 0.00% 0.00%
D 94871 76446 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 3519 9.35 1093 1031 266.2
A 7 110 3260 8.37 1093 1031 266.2
A 9 19 3212 8.19 1093 1031 266.2
B 2 9 3395 10.72 1120 1074 216.6
B 3 80 2919 8.52 1120 1074 216.6
B 2 8 2839 8.15 1120 1074 216.6
C 12 241 3117 7.19 1140 1075 284.1
C 3 187 2953 6.61 1140 1075 284.1
C 3 126 2856 6.27 1140 1075 284.1
D 10 189 2660 6.32 1034 942 271.9
D 15 47 2658 6.31 1034 942 271.9
D 7 3 2633 6.22 1034 942 271.9

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