ASTROSAT CZTI

Data Quality Report

Orbit 57494

Creation date: 2026-05-14T16:06:46.143209
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_113T09_9000006574_57494cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57494cztM0_level2_quad_clean.evt
Size (bytes)465,399,360101,243,520
Size443.8 MB 96.6 MB
Events in quadrant A3,208,154680,600
Events in quadrant B3,993,831713,191
Events in quadrant C6,314,606588,376
Events in quadrant D3,188,287614,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142482
B0164322
C0235162
D0141442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6722610.907468%
B67222423.600119%
C672288713.195478%
D6722701.041357%

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 7842 6722 7 7 0.09% 0.10%
B 7842 6722 118 118 1.50% 1.76%
C 7841 6721 847 847 10.80% 12.60%
D 7842 6722 18 18 0.23% 0.27%

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 13 153 201805 1087.81 758 739 184.8
A 0 12 37606 199.46 758 739 184.8
A 4 3 11757 59.61 758 739 184.8
B 4 206 716794 4579.05 732 705 156.4
B 5 185 131362 835.49 732 705 156.4
B 0 213 62416 394.61 732 705 156.4
C 9 38 1890593 9766.02 708 699 193.5
C 15 224 1256294 6488.28 708 699 193.5
C 13 3 203167 1046.25 708 699 193.5
D 5 173 53128 250.63 741 707 209.2
D 8 240 46324 218.1 741 707 209.2
D 15 201 40248 189.05 741 707 209.2

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