ASTROSAT CZTI

Data Quality Report

Orbit 23351

Creation date: 2024-06-27T18:53:08.442131
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_135T02_9000003450_23351cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23351cztM0_level2_quad_clean.evt
Size (bytes)578,784,96076,178,880
Size552.0 MB 72.6 MB
Events in quadrant A3,528,332455,634
Events in quadrant B3,761,644456,413
Events in quadrant C4,307,632453,948
Events in quadrant D5,445,327441,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148852
B0155142
C0171942
D0211312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7169721.004324%
B71691822.538708%
C71694446.193332%
D71692613.640675%

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 7689 7170 0 0 0.00% 0.00%
B 7689 7169 52 52 0.68% 0.73%
C 7689 7169 220 220 2.86% 3.07%
D 7689 7170 142 142 1.85% 1.98%

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 11644 57.88 913 894 185.7
A 15 174 8283 39.78 913 894 185.7
A 3 137 8053 38.54 913 894 185.7
B 0 245 177750 1014.87 901 879 174.3
B 0 190 24561 135.89 901 879 174.3
B 12 111 21060 115.8 901 879 174.3
C 0 239 732357 3586.16 867 872 204.0
C 14 238 135608 660.55 867 872 204.0
C 7 247 33527 160.09 867 872 204.0
D 1 52 1606753 7411.01 886 859 216.7
D 13 249 208757 959.43 886 859 216.7
D 9 85 104950 480.37 886 859 216.7

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