ASTROSAT CZTI

Data Quality Report

Orbit 28137

Creation date: 2024-06-27T19:48:28.106953
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_045T04_9000004066_28137cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28137cztM0_level2_quad_clean.evt
Size (bytes)2,181,948,480404,205,120
Size2.0 GB 385.5 MB
Events in quadrant A13,792,5902,625,141
Events in quadrant B14,185,5092,677,114
Events in quadrant C14,077,4242,542,802
Events in quadrant D22,078,6832,414,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0596890
B0609540
C0604460
D0849290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A288622060.713741%
B288622951.022105%
C288633871.340817%
D2886218496.406347%

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 33947 28866 1 1 0.00% 0.00%
B 33948 28864 4 4 0.01% 0.01%
C 33948 28866 8 8 0.02% 0.03%
D 33947 28865 1514 1514 4.46% 5.25%

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 67447 90.06 3552 3481 710.3
A 13 254 48791 63.79 3552 3481 710.3
A 3 137 34456 43.61 3552 3481 710.3
B 4 200 114946 167.6 3532 3442 665.3
B 12 111 84074 121.2 3532 3442 665.3
B 11 111 76310 109.53 3532 3442 665.3
C 14 238 547499 684.01 3402 3427 795.4
C 2 16 196618 242.88 3402 3427 795.4
C 3 233 83315 100.44 3402 3427 795.4
D 1 52 4992160 6287.27 3346 3263 793.5
D 5 222 1941879 2443.14 3346 3263 793.5
D 8 195 1098400 1380.15 3346 3263 793.5

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