ASTROSAT CZTI

Data Quality Report

Orbit 36452

Creation date: 2022-07-19T05:17:46.147348
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/AS1C07_009T01_9000005200_36452cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36452cztM0_level2_quad_clean.evt
Size (bytes)394,499,52072,953,280
Size376.2 MB 69.6 MB
Events in quadrant A2,471,072476,873
Events in quadrant B3,119,600470,000
Events in quadrant C2,696,755462,347
Events in quadrant D3,310,134439,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107283
B0125642
C0111332
D0134132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5145100.194363%
B51451302.526725%
C5145731.418853%
D51451793.479106%

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 7029 5146 2 2 0.03% 0.04%
B 7029 5146 75 75 1.07% 1.46%
C 7029 5146 53 53 0.75% 1.03%
D 7029 5146 137 137 1.95% 2.66%

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 10 83 192590 1620.32 581 569 118.5
A 10 255 12075 97.09 581 569 118.5
A 9 143 11088 88.76 581 569 118.5
B 5 172 309862 2844.39 572 558 108.7
B 5 255 284412 2610.35 572 558 108.7
B 15 32 78900 720.44 572 558 108.7
C 0 10 260810 1997.44 559 563 130.3
C 15 214 238554 1826.62 559 563 130.3
C 0 207 8778 63.05 559 563 130.3
D 2 250 752925 5598.87 557 542 134.4
D 12 233 62879 463.88 557 542 134.4
D 13 171 46449 341.62 557 542 134.4

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