ASTROSAT CZTI

Data Quality Report

Orbit 27636

Creation date: 2024-06-27T19:42:26.572835
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/AS1T03_257T01_9000003976_27636cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27636cztM0_level2_quad_clean.evt
Size (bytes)1,019,796,480133,637,760
Size972.6 MB 127.4 MB
Events in quadrant A5,528,256845,239
Events in quadrant B6,659,592859,421
Events in quadrant C5,751,734813,394
Events in quadrant D12,169,099733,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236610
B0268660
C0242470
D0440320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114931311.139824%
B114944123.584479%
C114942261.966243%
D11494153313.337393%

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 12883 11494 1 1 0.01% 0.01%
B 12884 11495 160 160 1.24% 1.39%
C 12884 11495 18 18 0.14% 0.16%
D 12884 11495 1440 1440 11.18% 12.53%

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 19734 64.43 1426 1394 284.7
A 3 137 13574 42.79 1426 1394 284.7
A 11 84 12425 38.75 1426 1394 284.7
B 10 245 593380 2190.72 1411 1375 270.2
B 3 64 335845 1237.71 1411 1375 270.2
B 15 32 81384 296.07 1411 1375 270.2
C 14 238 220146 684.92 1363 1371 319.4
C 2 16 201886 627.75 1363 1371 319.4
C 3 233 12824 35.86 1363 1371 319.4
D 7 80 4123922 13225.25 1306 1272 311.7
D 1 52 2925710 9381.45 1306 1272 311.7
D 2 250 129409 411.06 1306 1272 311.7

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