ASTROSAT CZTI

Data Quality Report

Orbit 52003

Creation date: 2025-05-10T03:08:32.778428
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/AS1C09_011T06_9000006468_52003cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52003cztM0_level2_quad_clean.evt
Size (bytes)814,006,08083,180,160
Size776.3 MB 79.3 MB
Events in quadrant A6,528,086534,901
Events in quadrant B5,020,394650,692
Events in quadrant C5,945,583561,508
Events in quadrant D12,148,925329,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238412
B0193712
C0220447
D0404462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328111717.651707%
B63294717.441934%
C632877712.278761%
D6328304448.103666%

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 7558 6328 929 929 12.29% 14.68%
B 7559 6330 313 313 4.14% 4.94%
C 7558 6329 671 671 8.88% 10.60%
D 7557 6327 3159 3159 41.80% 49.93%

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 2 48 1664446 10685.5 619 605 155.7
A 7 64 604016 3875.22 619 605 155.7
A 3 14 537513 3448.12 619 605 155.7
B 7 0 534776 3839.61 665 643 139.1
B 4 206 385105 2763.7 665 643 139.1
B 4 171 299820 2150.63 665 643 139.1
C 15 224 2404322 13563.67 642 640 177.2
C 9 38 283034 1593.51 642 640 177.2
C 12 252 146307 821.98 642 640 177.2
D 6 42 4199545 27394.14 535 512 153.3
D 12 17 2373990 15484.37 535 512 153.3
D 8 176 1520843 9918.51 535 512 153.3

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