ASTROSAT CZTI

Data Quality Report

Orbit 58202

Creation date: 2026-07-01T10:52:12.903966
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_042T02_9000006586_58202cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58202cztM0_level2_quad_clean.evt
Size (bytes)2,629,419,840510,292,800
Size2.4 GB 486.7 MB
Events in quadrant A19,371,2303,340,191
Events in quadrant B31,296,2833,458,202
Events in quadrant C16,062,1463,285,117
Events in quadrant D27,813,0212,886,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07280
B07280
C07280
D07280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0845354
B01177024
C0751244
D01081636

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3611114954.140013%
B3611231148.623172%
C36112880.243686%
D3611130558.460026%

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 38126 36115 1274 1274 3.34% 3.53%
B 38127 36116 2106 2106 5.52% 5.83%
C 38127 36116 31 31 0.08% 0.09%
D 38126 36115 2761 2761 7.24% 7.65%

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 7 64 3868840 3990.6 3894 3789 968.5
A 13 248 185647 187.76 3894 3789 968.5
A 4 3 120775 120.79 3894 3789 968.5
B 10 128 10532220 13183.63 3786 3639 798.6
B 2 249 3406494 4260.97 3786 3639 798.6
B 5 185 395584 490.78 3786 3639 798.6
C 12 252 493155 468.81 3832 3795 1043.8
C 6 223 227011 213.84 3832 3795 1043.8
C 11 244 99621 91.8 3832 3795 1043.8
D 12 110 6692606 6385.83 3703 3544 1047.5
D 8 160 2052120 1955.71 3703 3544 1047.5
D 7 222 1136413 1081.51 3703 3544 1047.5

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