ASTROSAT CZTI

Data Quality Report

Orbit 57824

Creation date: 2026-06-05T22:19:56.536770
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_083T16_9000006580_57824cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57824cztM0_level2_quad_clean.evt
Size (bytes)1,144,408,320154,062,720
Size1.1 GB 146.9 MB
Events in quadrant A6,104,1911,099,531
Events in quadrant B8,709,1511,034,002
Events in quadrant C16,211,633765,723
Events in quadrant D10,422,538946,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264273
B0345453
C0563843
D0389643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118302962.502113%
B11829146212.359456%
C11829365130.864824%
D118299538.056471%

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 13110 11833 136 136 1.04% 1.15%
B 13109 11831 1092 1092 8.33% 9.23%
C 13109 11831 2976 2976 22.70% 25.15%
D 13109 11832 716 716 5.46% 6.05%

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 10 251 655652 2137.55 1247 1216 306.2
A 3 14 287010 933.47 1247 1216 306.2
A 3 245 182798 593.09 1247 1216 306.2
B 4 142 3542970 14471.88 1148 1105 244.7
B 0 171 155828 632.19 1148 1105 244.7
B 5 185 102316 413.54 1148 1105 244.7
C 9 38 9343430 31792.38 1072 1059 293.9
C 15 224 2269275 7718.81 1072 1059 293.9
C 14 254 179811 608.3 1072 1059 293.9
D 12 110 3911921 11653.46 1183 1129 335.6
D 3 224 467006 1388.23 1183 1129 335.6
D 8 160 435744 1295.07 1183 1129 335.6

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