ASTROSAT CZTI

Data Quality Report

Orbit 55022

Creation date: 2025-11-29T08:48:09.492139
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_025T01_9000006530_55022cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55022cztM0_level2_quad_clean.evt
Size (bytes)687,830,40061,657,920
Size656.0 MB 58.8 MB
Events in quadrant A6,518,518410,713
Events in quadrant B3,595,830504,181
Events in quadrant C3,298,921476,572
Events in quadrant D11,622,33892,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02324253
B014903103
C01385616
D03841282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0161
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475125022.831050%
B54695259.599561%
C54772614.765383%
D5471454883.129227%

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 6201 5474 1125 1125 18.14% 20.55%
B 6201 5469 477 477 7.69% 8.72%
C 6202 5480 192 192 3.10% 3.50%
D 6202 5470 3590 3590 57.88% 65.63%

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 15 32 3458507 27241.75 505 492 126.9
A 12 115 768681 6051.68 505 492 126.9
A 0 8 207375 1629.79 505 492 126.9
B 0 183 1212894 10579.19 530 513 114.6
B 10 245 103390 897.7 530 513 114.6
B 5 236 67770 586.88 530 513 114.6
C 4 5 705093 4543.86 561 556 155.1
C 13 3 228759 1471.78 561 556 155.1
C 1 16 39544 251.45 561 556 155.1
D 15 94 9317648 135119.67 236 224 69.0
D 11 129 918448 13315.92 236 224 69.0
D 15 93 108274 1566.92 236 224 69.0

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