ASTROSAT CZTI

Data Quality Report

Orbit 44196

Creation date: 2024-06-27T23:00:22.618989
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/AS1A13_074T08_9000005966_44196cztM0_level2.fits modeM0/AS1A13_074T08_9000005966_44196cztM0_level2_quad_clean.evt
Size (bytes)464,595,840104,166,720
Size443.1 MB 99.3 MB
Events in quadrant A4,383,081700,360
Events in quadrant B4,060,457717,098
Events in quadrant C3,003,758692,667
Events in quadrant D5,270,583612,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181991
B0161301
C0131241
D0199171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61851001.616815%
B61861642.651148%
C6186380.614290%
D61863245.237633%

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 7285 6186 10 10 0.14% 0.16%
B 7286 6187 60 60 0.82% 0.97%
C 7286 6187 13 13 0.18% 0.21%
D 7286 6187 282 282 3.87% 4.56%

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 83 1440841 9549.51 727 711 150.8
A 15 174 104030 685.11 727 711 150.8
A 15 223 15035 94.98 727 711 150.8
B 0 219 432209 3069.69 717 695 140.6
B 0 230 178518 1264.99 717 695 140.6
B 4 158 156136 1105.77 717 695 140.6
C 14 254 141834 840.63 713 718 167.9
C 4 254 42059 246.27 713 718 167.9
C 1 16 17521 100.1 713 718 167.9
D 1 52 1360248 7645.28 704 683 177.8
D 12 17 329185 1847.28 704 683 177.8
D 5 222 239663 1343.86 704 683 177.8

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