ASTROSAT CZTI

Data Quality Report

Orbit 55258

Creation date: 2025-12-15T07:05:54.266988
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_55258cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55258cztM0_level2_quad_clean.evt
Size (bytes)357,445,44097,004,160
Size340.9 MB 92.5 MB
Events in quadrant A3,196,705623,788
Events in quadrant B2,885,290681,435
Events in quadrant C3,432,377605,279
Events in quadrant D3,207,880570,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144943
B0136412
C0149352
D0144672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65371312.003977%
B6537470.718984%
C6537851.300291%
D6537590.902555%

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 8852 6539 95 95 1.07% 1.45%
B 8852 6539 12 12 0.14% 0.18%
C 8852 6539 70 70 0.79% 1.07%
D 8852 6539 32 32 0.36% 0.49%

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 371662 2205.44 679 663 168.2
A 7 243 54602 320.65 679 663 168.2
A 3 14 32254 187.8 679 663 168.2
B 5 185 66122 449.68 683 657 145.6
B 2 249 34483 232.35 683 657 145.6
B 10 247 22702 151.43 683 657 145.6
C 13 3 302874 1608.97 676 670 187.8
C 14 254 121664 644.19 676 670 187.8
C 12 252 110700 585.81 676 670 187.8
D 3 12 136044 706.92 669 638 191.5
D 7 96 117578 610.51 669 638 191.5
D 10 181 65514 338.7 669 638 191.5

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