ASTROSAT CZTI

Data Quality Report

Orbit 56488

Creation date: 2026-03-08T03:07:59.280736
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_060T01_9000006556_56488cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56488cztM0_level2_quad_clean.evt
Size (bytes)2,078,812,800413,432,640
Size1.9 GB 394.3 MB
Events in quadrant A20,649,9942,643,466
Events in quadrant B15,404,3112,951,060
Events in quadrant C17,490,4582,511,016
Events in quadrant D21,138,7002,394,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0818114
B0660954
C0740304
D0829184

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05940
B05940
C05940
D05940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2933616185.515408%
B293364201.431688%
C2933617726.040360%
D2933615485.276793%

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 32041 29340 1152 1152 3.60% 3.93%
B 32041 29340 92 92 0.29% 0.31%
C 32041 29340 1544 1544 4.82% 5.26%
D 32041 29340 1256 1256 3.92% 4.28%

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 4 95 2031485 2610.61 3109 3031 777.0
A 0 8 1424336 1829.21 3109 3031 777.0
A 12 3 1227981 1576.5 3109 3031 777.0
B 5 172 1082270 1624.32 3140 3027 664.4
B 0 63 427322 638.59 3140 3027 664.4
B 0 153 218608 324.46 3140 3027 664.4
C 15 230 4091870 5066.13 2973 2949 807.1
C 12 252 467254 575.27 2973 2949 807.1
C 6 223 321955 395.25 2973 2949 807.1
D 2 249 2692091 3154.31 3001 2867 852.6
D 12 4 2122887 2486.66 3001 2867 852.6
D 11 176 1205750 1410.91 3001 2867 852.6

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