ASTROSAT CZTI

Data Quality Report

Orbit 20170927_G07_003T02_9000001564_level2

Creation date: 2025-11-17T09:12:28.351321
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/AS1G07_003T02_9000001564cztM0_level2.fits modeM0/AS1G07_003T02_9000001564cztM0_level2_quad_clean.evt
Size (bytes)274,596,480272,476,800
Size261.9 MB 259.9 MB
Events in quadrant A1,573,7001,514,688
Events in quadrant B1,583,9781,602,693
Events in quadrant C1,669,5201,632,910
Events in quadrant D1,430,3501,444,760

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0976590
B0847480
C0616290
D0766880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29918365912.230096%
B2992023427.827540%
C299202380.795455%
D2992011323.783422%

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 34676 29843 0 0 0.00% 0.00%
B 34676 29916 0 0 0.00% 0.00%
C 34676 29919 0 0 0.00% 0.00%
D 34676 29897 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 1484 10.66 408 382 103.4
A 7 110 1251 8.4 408 382 103.4
A 9 19 1157 7.49 408 382 103.4
B 2 9 1434 12.32 417 398 84.1
B 12 226 1088 8.2 417 398 84.1
B 14 254 1065 7.93 417 398 84.1
C 1 81 1267 7.37 440 409 116.3
C 1 80 1243 7.17 440 409 116.3
C 12 241 1193 6.74 440 409 116.3
D 3 14 1063 6.27 407 371 110.4
D 6 231 1031 5.98 407 371 110.4
D 7 3 1027 5.94 407 371 110.4

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