ASTROSAT CZTI

Data Quality Report

Orbit 50538

Creation date: 2025-01-31T11:09:21.495487
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/AS1T05_239T01_9000006444_50538cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50538cztM0_level2_quad_clean.evt
Size (bytes)610,240,32089,904,960
Size582.0 MB 85.7 MB
Events in quadrant A4,223,117603,103
Events in quadrant B4,812,883638,196
Events in quadrant C7,129,944538,227
Events in quadrant D5,929,429497,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168271
B0186521
C0255692
D0220661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63732353.687431%
B63735037.892672%
C637294214.783427%
D637384813.306135%

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 7478 6374 118 118 1.58% 1.85%
B 7478 6374 299 299 4.00% 4.69%
C 7477 6373 840 840 11.23% 13.18%
D 7478 6373 698 698 9.33% 10.95%

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 4 78 200975 1176.19 684 667 170.3
A 8 247 176219 1030.83 684 667 170.3
A 12 250 171137 1000.98 684 667 170.3
B 4 170 869178 6116.59 670 647 142.0
B 12 0 481181 3384.14 670 647 142.0
B 0 229 163263 1145.21 670 647 142.0
C 0 208 1231885 6881.71 643 639 178.9
C 15 174 1035437 5783.72 643 639 178.9
C 12 252 686938 3835.88 643 639 178.9
D 6 42 925161 5404.58 618 596 171.1
D 7 96 779131 4550.95 618 596 171.1
D 8 246 555800 3245.46 618 596 171.1

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