ASTROSAT CZTI

Data Quality Report

Orbit 23505

Creation date: 2024-06-27T18:55:23.828381
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/AS1A07_112T01_9000003478_23505cztM0_level2.evt modeM0/AS1A07_112T01_9000003478_23505cztM0_level2_quad_clean.evt
Size (bytes)1,437,981,120256,743,360
Size1.3 GB 244.8 MB
Events in quadrant A9,609,1041,623,400
Events in quadrant B10,741,4561,663,461
Events in quadrant C9,682,3201,587,741
Events in quadrant D12,181,7281,540,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411114
B0445374
C0410764
D0496224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19761780.394717%
B197613121.578867%
C197611950.986792%
D197614682.368301%

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 24076 19765 0 0 0.00% 0.00%
B 24076 19763 127 127 0.53% 0.64%
C 24076 19763 2 2 0.01% 0.01%
D 24076 19764 339 339 1.41% 1.72%

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 2 79 133254 268.25 2459 2411 487.8
A 13 254 33829 64.41 2459 2411 487.8
A 0 226 21345 38.82 2459 2411 487.8
B 0 189 491246 1074.44 2431 2372 455.0
B 12 17 281457 613.37 2431 2372 455.0
B 0 219 279676 609.45 2431 2372 455.0
C 14 238 374838 684.3 2342 2356 544.3
C 7 247 114051 205.2 2342 2356 544.3
C 2 16 18002 28.74 2342 2356 544.3
D 1 52 2475376 4319.21 2363 2298 572.6
D 9 35 364233 632.12 2363 2298 572.6
D 9 85 195020 336.59 2363 2298 572.6

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