ASTROSAT CZTI

Data Quality Report

Orbit 25373

Creation date: 2024-06-27T19:16:55.438905
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/AS1A09_104T01_9000003710_25373cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25373cztM0_level2_quad_clean.evt
Size (bytes)856,186,560144,783,360
Size816.5 MB 138.1 MB
Events in quadrant A5,866,718941,134
Events in quadrant B5,572,222944,723
Events in quadrant C5,495,977885,523
Events in quadrant D8,276,679877,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238910
B0228020
C0226440
D0313620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106231341.261414%
B106241621.524849%
C106241721.618976%
D106248137.652485%

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 13128 10623 4 4 0.03% 0.04%
B 13129 10624 1 1 0.01% 0.01%
C 13129 10624 4 4 0.03% 0.04%
D 13129 10624 550 550 4.19% 5.18%

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 6 16 239101 844.42 1436 1410 281.5
A 15 173 54453 188.44 1436 1410 281.5
A 12 96 40986 140.6 1436 1410 281.5
B 0 190 44128 163.58 1407 1378 261.3
B 12 111 31343 114.66 1407 1378 261.3
B 11 111 28435 103.53 1407 1378 261.3
C 14 238 219905 714.29 1337 1348 306.0
C 9 54 36864 116.07 1337 1348 306.0
C 0 239 20297 61.93 1337 1348 306.0
D 7 238 2485056 7660.4 1354 1317 324.2
D 8 195 522313 1606.87 1354 1317 324.2
D 2 244 75541 228.92 1354 1317 324.2

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