ASTROSAT CZTI

Data Quality Report

Orbit 57307

Creation date: 2026-05-02T02:52:19.307167
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_049T03_9000006570_57307cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57307cztM0_level2_quad_clean.evt
Size (bytes)380,445,12091,920,960
Size362.8 MB 87.7 MB
Events in quadrant A2,903,380613,612
Events in quadrant B3,053,169650,211
Events in quadrant C4,440,737554,518
Events in quadrant D3,211,290539,816

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013019109
B013536129
C017711282
D014057210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01242
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107300.491240%
B61001101.803279%
C60832714.455039%
D6078380.625206%

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 7338 6159 8 8 0.11% 0.13%
B 7338 6152 43 43 0.59% 0.70%
C 7339 6155 246 246 3.35% 4.00%
D 7338 6153 27 27 0.37% 0.44%

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 14 117602 710.93 668 651 164.5
A 0 12 79657 480.27 668 651 164.5
A 8 4 68777 414.13 668 651 164.5
B 7 252 204753 1423.8 659 633 143.4
B 8 234 63679 439.76 659 633 143.4
B 5 185 40567 278.55 659 633 143.4
C 15 224 1707678 9999.86 625 621 170.7
C 14 254 122206 712.24 625 621 170.7
C 9 237 54718 316.9 625 621 170.7
D 3 224 387835 2181.95 630 602 177.5
D 8 240 107651 603.19 630 602 177.5
D 2 249 105515 591.16 630 602 177.5

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