ASTROSAT CZTI

Data Quality Report

Orbit 20200311_T03_182T01_9000003560_level2

Creation date: 2025-12-09T23:20:57.987560
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_182T01_9000003560cztM0_level2.fits modeM0/AS1T03_182T01_9000003560cztM0_level2_quad_clean.evt
Size (bytes)756,371,520558,146,880
Size721.3 MB 532.3 MB
Events in quadrant A4,742,6783,085,899
Events in quadrant B4,499,6703,075,347
Events in quadrant C4,586,2042,934,834
Events in quadrant D3,952,1282,680,395

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015200
B015280
C015220
D015240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01557800
B01657600
C01569260
D02211410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A747167811.045292%
B7477613241.770622%
C7472211691.564466%
D7472335314.725453%

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 93403 75210 0 0 0.00% 0.00%
B 93403 75306 0 0 0.00% 0.00%
C 93403 75218 0 0 0.00% 0.00%
D 93403 75224 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 4440 10.78 1234 1156 304.6
A 7 110 3805 8.7 1234 1156 304.6
A 9 19 3513 7.74 1234 1156 304.6
B 2 9 3578 10.42 1187 1132 234.8
B 5 225 3049 8.16 1187 1132 234.8
B 3 80 2992 7.92 1187 1132 234.8
C 12 241 3146 6.51 1212 1134 309.3
C 7 111 3122 6.43 1212 1134 309.3
C 9 233 3106 6.38 1212 1134 309.3
D 10 189 2821 6.04 1129 1031 296.3
D 3 14 2781 5.91 1129 1031 296.3
D 6 231 2777 5.89 1129 1031 296.3

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