ASTROSAT CZTI

Data Quality Report

Orbit 26237

Creation date: 2024-06-27T19:26:27.680468
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/AS1A09_079T03_9000003790_26237cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26237cztM0_level2_quad_clean.evt
Size (bytes)679,466,880113,279,040
Size648.0 MB 108.0 MB
Events in quadrant A4,366,592709,649
Events in quadrant B4,628,623723,714
Events in quadrant C4,522,596707,019
Events in quadrant D6,462,809678,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186320
B0194420
C0190140
D0250760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8813971.100647%
B88132282.587087%
C88132392.711903%
D88136367.216612%

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 10373 8815 17 17 0.16% 0.19%
B 10373 8815 95 95 0.92% 1.08%
C 10373 8815 26 26 0.25% 0.29%
D 10373 8815 522 522 5.03% 5.92%

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 13 167267 759.79 1086 1064 218.7
A 13 254 13398 56.38 1086 1064 218.7
A 3 137 10059 41.12 1086 1064 218.7
B 5 172 366804 1780.74 1075 1044 205.4
B 0 186 26502 123.94 1075 1044 205.4
B 12 111 24700 115.17 1075 1044 205.4
C 0 207 166534 677.22 1041 1047 244.4
C 14 238 164741 669.89 1041 1047 244.4
C 3 233 115458 468.2 1041 1047 244.4
D 1 52 2450722 9985.06 1025 996 245.3
D 12 233 68895 276.76 1025 996 245.3
D 2 234 38097 151.22 1025 996 245.3

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