ASTROSAT CZTI

Data Quality Report

Orbit 56345

Creation date: 2026-02-26T10:10:38.203258
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_049T01_9000006552_56345cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56345cztM0_level2_quad_clean.evt
Size (bytes)582,868,80095,022,720
Size555.9 MB 90.6 MB
Events in quadrant A4,241,947635,905
Events in quadrant B3,743,464697,670
Events in quadrant C6,461,890543,825
Events in quadrant D6,605,487529,445

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173022
B0158582
C0239302
D0242932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67482383.526971%
B67481702.519265%
C674896214.256076%
D674871210.551274%

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 7798 6749 140 140 1.80% 2.07%
B 7798 6749 76 76 0.97% 1.13%
C 7798 6749 748 748 9.59% 11.08%
D 7798 6749 611 611 7.84% 9.05%

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 3 78 673256 3787.68 718 701 177.6
A 1 191 238672 1340.2 718 701 177.6
A 15 33 97388 544.52 718 701 177.6
B 5 185 241310 1559.68 725 697 154.3
B 5 172 204685 1322.28 725 697 154.3
B 0 213 89636 576.51 725 697 154.3
C 12 254 1584211 8719.33 662 656 181.6
C 15 230 1553496 8550.21 662 656 181.6
C 12 252 300223 1649.47 662 656 181.6
D 8 129 1167743 6022.13 677 644 193.8
D 6 239 781019 4026.67 677 644 193.8
D 2 249 761036 3923.56 677 644 193.8

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