ASTROSAT CZTI

Data Quality Report

Orbit 56448

Creation date: 2026-03-05T07:27:39.077099
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_083T05_9000006554_56448cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56448cztM0_level2_quad_clean.evt
Size (bytes)908,841,60078,880,320
Size866.7 MB 75.2 MB
Events in quadrant A6,595,581574,442
Events in quadrant B12,146,800295,969
Events in quadrant C3,251,625636,418
Events in quadrant D11,127,225411,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241292
B0407122
C0144012
D0377583

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6742101515.054880%
B6742416161.717591%
C6742450.667458%
D6741246236.522771%

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 7917 6742 998 998 12.61% 14.80%
B 7917 6742 3860 3860 48.76% 57.25%
C 7917 6743 27 27 0.34% 0.40%
D 7916 6741 2676 2676 33.80% 39.70%

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 12 3 2377308 14019.88 682 667 169.5
A 3 14 630378 3714.68 682 667 169.5
A 4 95 336484 1980.99 682 667 169.5
B 5 172 9434158 96695.84 457 441 97.6
B 4 206 740767 7588.36 457 441 97.6
B 0 63 39602 401.4 457 441 97.6
C 1 16 206581 1051.16 712 705 195.9
C 12 252 75471 381.74 712 705 195.9
C 12 249 74212 375.31 712 705 195.9
D 5 113 5706241 32185.24 622 593 177.3
D 8 129 2165686 12213.17 622 593 177.3
D 12 3 207731 1168.45 622 593 177.3

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