ASTROSAT CZTI

Data Quality Report

Orbit 38827

Creation date: 2024-06-27T21:56:57.613987
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_083T02_9000005404_38827cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38827cztM0_level2_quad_clean.evt
Size (bytes)308,865,60088,148,160
Size294.6 MB 84.1 MB
Events in quadrant A2,851,865593,420
Events in quadrant B2,525,148602,937
Events in quadrant C2,630,170574,422
Events in quadrant D3,011,893526,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117233
B0113162
C0113252
D0127542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5312150.282380%
B5312681.280120%
C5312370.696536%
D5312861.618976%

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 7133 5313 8 8 0.11% 0.15%
B 7133 5313 54 54 0.76% 1.02%
C 7133 5313 32 32 0.45% 0.60%
D 7133 5313 63 63 0.88% 1.19%

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 404008 3463.58 574 564 116.5
A 13 248 197538 1691.03 574 564 116.5
A 13 6 21289 177.92 574 564 116.5
B 5 172 171059 1555.45 567 550 109.6
B 5 200 55073 497.38 567 550 109.6
B 0 221 35183 315.94 567 550 109.6
C 15 214 236724 1834.93 553 555 128.7
C 15 208 206146 1597.35 553 555 128.7
C 14 254 8714 63.39 553 555 128.7
D 12 227 229648 1688.68 552 535 135.7
D 2 16 198022 1455.58 552 535 135.7
D 2 250 150280 1103.7 552 535 135.7

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