ASTROSAT CZTI

Data Quality Report

Orbit 56028

Creation date: 2026-02-05T01:58:08.419756
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_066T02_9000006546_56028cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56028cztM0_level2_quad_clean.evt
Size (bytes)772,344,00078,914,880
Size736.6 MB 75.3 MB
Events in quadrant A7,905,225523,272
Events in quadrant B3,377,496676,062
Events in quadrant C10,231,385214,709
Events in quadrant D6,570,602521,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280702
B0146252
C0349492
D0240622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506140921.656932%
B65061021.567784%
C6506427365.677836%
D650671310.959115%

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 7641 6507 1183 1183 15.48% 18.18%
B 7641 6507 38 38 0.50% 0.58%
C 7641 6502 2392 2392 31.30% 36.79%
D 7641 6507 709 709 9.28% 10.90%

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 15 32 4665628 29297.02 635 618 159.2
A 0 8 433933 2721.29 635 618 159.2
A 12 115 147265 920.97 635 618 159.2
B 4 171 128173 855.91 695 670 149.0
B 0 213 90749 604.69 695 670 149.0
B 0 199 69812 464.14 695 670 149.0
C 13 3 8871514 92837.31 338 334 95.6
C 12 252 19072 196.09 338 334 95.6
C 14 254 8717 87.73 338 334 95.6
D 11 129 2378485 12577.75 655 626 189.1
D 6 239 756020 3995.68 655 626 189.1
D 2 62 419210 2214.11 655 626 189.1

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