ASTROSAT CZTI

Data Quality Report

Orbit 22398

Creation date: 2024-06-27T18:40:19.131287
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/AS1A07_007T04_9000003310_22398cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22398cztM0_level2_quad_clean.evt
Size (bytes)585,817,920101,177,280
Size558.7 MB 96.5 MB
Events in quadrant A4,125,510624,016
Events in quadrant B4,268,180631,864
Events in quadrant C4,194,507607,307
Events in quadrant D4,562,532597,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180661
B0182741
C0181312
D0193181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87013964.551201%
B87024395.044817%
C87014244.873003%
D87013604.137455%

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 9031 8701 0 0 0.00% 0.00%
B 9032 8702 9 9 0.10% 0.10%
C 9031 8702 0 0 0.00% 0.00%
D 9031 8702 29 29 0.32% 0.33%

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 13 254 12692 53.71 1068 1041 216.9
A 3 137 9846 40.59 1068 1041 216.9
A 0 226 9202 37.62 1068 1041 216.9
B 3 64 31542 149.83 1062 1028 203.7
B 0 228 28401 134.41 1062 1028 203.7
B 12 111 25469 120.01 1062 1028 203.7
C 14 238 160012 655.21 1029 1032 242.6
C 0 239 14851 56.95 1029 1032 242.6
C 10 22 7616 27.13 1029 1032 242.6
D 1 52 246385 966.43 1043 1010 253.9
D 2 136 161256 631.14 1043 1010 253.9
D 7 223 111028 433.32 1043 1010 253.9

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