ASTROSAT CZTI

Data Quality Report

Orbit 55229

Creation date: 2025-12-13T07:08:20.664241
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_009T01_9000006534_55229cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55229cztM0_level2_quad_clean.evt
Size (bytes)462,075,84094,294,080
Size440.7 MB 89.9 MB
Events in quadrant A3,594,392614,909
Events in quadrant B2,946,635675,154
Events in quadrant C5,210,665560,612
Events in quadrant D4,842,287546,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155182
B0137203
C0201772
D0191012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65681983.014616%
B6567430.654789%
C65676199.425917%
D65673134.766256%

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 7693 6569 172 172 2.24% 2.62%
B 7692 6568 11 11 0.14% 0.17%
C 7692 6568 527 527 6.85% 8.02%
D 7692 6568 311 311 4.04% 4.74%

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 8 518432 3095.88 676 657 167.2
A 4 205 198563 1183.32 676 657 167.2
A 4 3 58591 346.4 676 657 167.2
B 10 247 52991 358.4 682 658 146.0
B 10 245 43485 293.3 682 658 146.0
B 5 185 39039 262.85 682 658 146.0
C 12 254 575547 3240.87 645 640 177.4
C 13 3 499158 2810.25 645 640 177.4
C 12 252 428949 2414.47 645 640 177.4
D 11 129 1475412 7998.72 651 624 184.4
D 2 249 371783 2013.03 651 624 184.4
D 2 31 183341 990.99 651 624 184.4

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