ASTROSAT CZTI

Data Quality Report

Orbit 53587

Creation date: 2025-08-25T12:25:43.218299
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_004T05_9000006502_53587cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53587cztM0_level2_quad_clean.evt
Size (bytes)812,064,96074,937,600
Size774.4 MB 71.5 MB
Events in quadrant A11,915,669232,771
Events in quadrant B5,363,046613,230
Events in quadrant C7,192,940501,574
Events in quadrant D5,118,935497,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395081
B0201021
C0255651
D0191971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065417668.854081%
B606576312.580379%
C6064116719.244723%
D606484013.852243%

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 7169 6064 3311 3311 46.18% 54.60%
B 7170 6065 396 396 5.52% 6.53%
C 7169 6064 860 860 12.00% 14.18%
D 7169 6064 489 489 6.82% 8.06%

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 62 8778069 74914.61 466 455 117.2
A 4 239 447009 3811.22 466 455 117.2
A 3 63 417792 3561.86 466 455 117.2
B 4 206 819752 5793.99 666 643 141.4
B 5 172 521280 3682.74 666 643 141.4
B 5 185 443166 3130.2 666 643 141.4
C 15 224 1694135 9958.93 614 608 170.1
C 13 3 1144823 6728.65 614 608 170.1
C 1 241 416012 2442.82 614 608 170.1
D 3 12 1358009 7437.07 642 611 182.5
D 7 70 407851 2231.23 642 611 182.5
D 12 3 148691 811.32 642 611 182.5

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