ASTROSAT CZTI

Data Quality Report

Orbit 07995

Creation date: 2024-06-27T15:26:36.672125
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/AS1G06_138T03_9000001096_07995cztM0_level2.evt modeM0/AS1G06_138T03_9000001096_07995cztM0_level2_quad_clean.evt
Size (bytes)636,537,60099,457,920
Size607.0 MB 94.9 MB
Events in quadrant A3,840,394609,326
Events in quadrant B4,208,582625,116
Events in quadrant C4,607,685625,269
Events in quadrant D6,063,380580,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171813
B0177952
C0193335
D0237242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82193273.978586%
B82193674.465263%
C82181912.324166%
D821991511.132741%

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 8449 8223 0 0 0.00% 0.00%
B 8449 8223 0 0 0.00% 0.00%
C 8449 8223 1 1 0.01% 0.01%
D 8449 8223 677 677 8.01% 8.23%

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 0 226 9278 40.25 996 971 206.4
A 12 194 8668 37.3 996 971 206.4
A 0 128 5147 20.24 996 971 206.4
B 5 255 303240 1532.78 998 972 197.2
B 12 111 22354 108.43 998 972 197.2
B 11 111 18207 87.4 998 972 197.2
C 8 208 794233 3487.5 972 976 227.5
C 1 16 7441 28.42 972 976 227.5
C 13 61 7347 28.01 972 976 227.5
D 1 52 2286326 8969.01 934 911 254.8
D 1 83 98689 383.73 934 911 254.8
D 2 14 43968 168.98 934 911 254.8

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