ASTROSAT CZTI

Data Quality Report

Orbit 00973

Creation date: 2024-06-27T14:05:32.697411
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_998T01_9000000188_00973cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00973cztM0_level2_quad_clean.evt
Size (bytes)1,199,603,520109,278,720
Size1.1 GB 104.2 MB
Events in quadrant A8,569,565717,846
Events in quadrant B9,470,232710,940
Events in quadrant C8,883,782700,416
Events in quadrant D8,930,177679,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306050
B0332270
C0315150
D0317110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A720760.083252%
B7207720.999029%
C720780.111003%
D72062503.469331%

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 7582 7208 254 254 3.35% 3.52%
B 7582 7208 516 516 6.81% 7.16%
C 7582 7208 322 322 4.25% 4.47%
D 7581 7207 582 582 7.68% 8.08%

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 11 242 17649 28.9 2222 2236 533.4
A 12 189 10142 14.82 2222 2236 533.4
A 12 243 8843 12.39 2222 2236 533.4
B 0 220 104987 186.92 2327 2334 549.2
B 15 154 88585 157.06 2327 2334 549.2
B 15 22 85881 152.13 2327 2334 549.2
C 15 241 346719 573.85 2153 2231 600.3
C 10 34 67306 108.4 2153 2231 600.3
C 3 111 31690 49.07 2153 2231 600.3
D 12 188 740423 1180.56 2039 2110 625.4
D 1 4 404973 644.18 2039 2110 625.4
D 13 73 67214 104.1 2039 2110 625.4

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