ASTROSAT CZTI

Data Quality Report

Orbit 31107

Creation date: 2024-06-27T20:23:26.872952
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/AS1A10_109T01_9000004492_31107cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31107cztM0_level2_quad_clean.evt
Size (bytes)602,628,480120,836,160
Size574.7 MB 115.2 MB
Events in quadrant A3,680,939815,581
Events in quadrant B5,470,152818,679
Events in quadrant C4,071,747796,724
Events in quadrant D4,590,402777,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152363
B0201963
C0165273
D0182623

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64631492.305431%
B64632664.115736%
C64633615.585641%
D64641742.691832%

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 9158 6466 0 0 0.00% 0.00%
B 9158 6466 2 2 0.02% 0.03%
C 9158 6466 43 43 0.47% 0.67%
D 9159 6467 32 32 0.35% 0.49%

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 12172 59.76 954 938 188.0
A 3 137 8723 41.41 954 938 188.0
A 0 226 8111 38.16 954 938 188.0
B 6 159 1737652 9957.55 938 918 174.4
B 12 111 20776 113.86 938 918 174.4
B 11 111 18990 103.62 938 918 174.4
C 0 10 164951 770.34 926 938 212.9
C 14 238 150623 703.04 926 938 212.9
C 10 22 125273 583.98 926 938 212.9
D 8 195 495149 2266.01 939 922 218.1
D 13 174 437884 2003.45 939 922 218.1
D 2 250 83661 379.35 939 922 218.1

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