ASTROSAT CZTI

Data Quality Report

Orbit 53556

Creation date: 2025-08-22T18:09:05.381846
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_53556cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53556cztM0_level2_quad_clean.evt
Size (bytes)652,688,64091,002,240
Size622.5 MB 86.8 MB
Events in quadrant A7,979,219492,355
Events in quadrant B4,381,452701,629
Events in quadrant C7,435,922514,574
Events in quadrant D3,860,569594,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281302
B0173192
C0266232
D0158052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6485199930.824981%
B64853485.366230%
C6485150923.269082%
D64852113.253662%

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 7599 6484 1532 1532 20.16% 23.63%
B 7600 6485 107 107 1.41% 1.65%
C 7600 6485 1201 1201 15.80% 18.52%
D 7599 6484 92 92 1.21% 1.42%

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 63 3457745 21423.04 648 634 161.4
A 15 174 717110 4439.86 648 634 161.4
A 7 206 510228 3157.85 648 634 161.4
B 5 185 412652 2623.79 733 710 157.0
B 10 254 364975 2320.12 733 710 157.0
B 15 20 178834 1134.53 733 710 157.0
C 12 254 2840750 15664.13 656 652 181.3
C 15 224 1034080 5699.72 656 652 181.3
C 15 201 296410 1631.21 656 652 181.3
D 13 153 223866 1087.59 727 695 205.2
D 2 120 100217 485.01 727 695 205.2
D 3 12 94563 457.45 727 695 205.2

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