ASTROSAT CZTI

Data Quality Report

Orbit 53067

Creation date: 2025-07-21T11:35:26.063840
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_011T07_9000006488_53067cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53067cztM0_level2_quad_clean.evt
Size (bytes)842,578,56090,538,560
Size803.5 MB 86.3 MB
Events in quadrant A9,682,413525,650
Events in quadrant B4,048,354700,060
Events in quadrant C10,662,785460,473
Events in quadrant D6,240,494554,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337341
B0173985
C0366721
D0234741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7182198027.568922%
B71813845.347445%
C7181243633.922852%
D718189012.393817%

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 7197 7183 1335 1335 18.55% 18.59%
B 7196 7182 106 106 1.47% 1.48%
C 7196 7182 1972 1972 27.40% 27.46%
D 7196 7182 629 629 8.74% 8.76%

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 9 191 5359661 30866.08 701 684 173.6
A 7 206 665121 3826.96 701 684 173.6
A 15 190 273528 1571.5 701 684 173.6
B 1 255 500721 3126.89 744 718 159.9
B 10 247 276460 1724.42 744 718 159.9
B 4 81 90887 563.89 744 718 159.9
C 10 171 3034348 17286.98 641 633 175.5
C 15 224 2554839 14554.6 641 633 175.5
C 1 241 1459737 8314.39 641 633 175.5
D 12 17 1498476 7267.19 719 686 206.1
D 3 12 331071 1603.01 719 686 206.1
D 15 78 315008 1525.07 719 686 206.1

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