ASTROSAT CZTI

Data Quality Report

Orbit 54050

Creation date: 2025-09-24T22:35:50.852893
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_041T01_9000006510_54050cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54050cztM0_level2_quad_clean.evt
Size (bytes)621,371,52082,575,360
Size592.6 MB 78.8 MB
Events in quadrant A3,841,883602,404
Events in quadrant B5,403,005618,778
Events in quadrant C3,027,810566,400
Events in quadrant D10,255,439287,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157481
B0201651
C0135732
D0346911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60901883.087028%
B60906039.901478%
C60901302.134647%
D6090303449.819376%

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 7220 6091 130 130 1.80% 2.13%
B 7220 6090 276 276 3.82% 4.53%
C 7220 6091 96 96 1.33% 1.58%
D 7220 6090 2470 2470 34.21% 40.56%

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 15 174 550481 3396.31 647 630 161.9
A 12 115 411639 2538.72 647 630 161.9
A 12 15 150421 925.23 647 630 161.9
B 5 236 2176034 16052.62 632 613 135.5
B 15 20 530882 3912.9 632 613 135.5
B 4 173 35166 254.97 632 613 135.5
C 4 5 167586 953.13 631 623 175.2
C 13 3 150120 853.43 631 623 175.2
C 12 252 58922 332.81 631 623 175.2
D 8 176 6688141 54028.71 432 413 123.8
D 2 165 799782 6457.93 432 413 123.8
D 12 2 320232 2583.75 432 413 123.8

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