ASTROSAT CZTI

Data Quality Report

Orbit 00773

Creation date: 2024-06-27T14:02:45.893037
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/AS1P01_010T01_9000000108_00773cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00773cztM0_level2_quad_clean.evt
Size (bytes)1,169,976,960103,654,080
Size1.1 GB 98.9 MB
Events in quadrant A8,591,167664,259
Events in quadrant B9,517,260671,169
Events in quadrant C8,570,348664,068
Events in quadrant D8,289,019650,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305300
B0332480
C0304520
D0296700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70291131.607626%
B70291482.105563%
C70281081.536710%
D70281201.707456%

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 7314 7030 323 323 4.42% 4.59%
B 7314 7030 502 502 6.86% 7.14%
C 7313 7029 357 357 4.88% 5.08%
D 7313 7029 321 321 4.39% 4.57%

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 12 236 22124 36.69 2227 2242 541.9
A 12 189 17797 28.7 2227 2242 541.9
A 11 79 9614 13.6 2227 2242 541.9
B 7 221 474249 862.09 2303 2306 547.4
B 0 220 163970 295.31 2303 2306 547.4
B 8 234 80426 142.7 2303 2306 547.4
C 10 17 140666 232.32 2114 2188 596.1
C 15 241 54320 87.46 2114 2188 596.1
C 9 68 49737 79.77 2114 2188 596.1
D 6 226 241094 370.68 2067 2135 644.6
D 1 4 141314 215.9 2067 2135 644.6
D 13 25 103901 157.86 2067 2135 644.6

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