ASTROSAT CZTI

Data Quality Report

Orbit 40847

Creation date: 2024-06-27T22:21:16.819016
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/AS1A12_104T02_9000005572_40847cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40847cztM0_level2_quad_clean.evt
Size (bytes)440,982,72088,220,160
Size420.6 MB 84.1 MB
Events in quadrant A3,177,639607,540
Events in quadrant B2,425,822620,335
Events in quadrant C3,680,597572,291
Events in quadrant D6,610,868484,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130423
B0112162
C0145202
D0235162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5518510.924248%
B5518220.398695%
C55182504.530627%
D551885015.404132%

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 7190 5519 27 27 0.38% 0.49%
B 7190 5519 6 6 0.08% 0.11%
C 7190 5519 193 193 2.68% 3.50%
D 7190 5519 880 880 12.24% 15.94%

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 519738 4173.19 602 590 124.4
A 13 248 259798 2083.65 602 590 124.4
A 12 189 51799 411.65 602 590 124.4
B 4 171 62632 532.94 597 580 116.4
B 12 111 14561 120.08 597 580 116.4
B 11 111 13434 110.4 597 580 116.4
C 14 254 999211 7361.91 580 583 135.6
C 15 214 230044 1691.59 580 583 135.6
C 0 10 143966 1057.02 580 583 135.6
D 12 79 3777563 27082.58 566 551 139.5
D 13 249 348804 2497.1 566 551 139.5
D 12 16 144544 1032.48 566 551 139.5

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