ASTROSAT CZTI

Data Quality Report

Orbit 45473

Creation date: 2024-06-27T23:12:46.054860
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/AS1C02_002T01_9000006092_45473cztM0_level2.fits modeM0/AS1C02_002T01_9000006092_45473cztM0_level2_quad_clean.evt
Size (bytes)483,059,520109,293,120
Size460.7 MB 104.2 MB
Events in quadrant A5,864,503724,230
Events in quadrant B3,885,611749,349
Events in quadrant C2,980,949732,022
Events in quadrant D4,654,226657,585

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218352
B0158202
C0133683
D0183452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63952443.815481%
B63962413.767980%
C6395310.484754%
D63951482.314308%

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 7580 6396 46 46 0.61% 0.72%
B 7581 6397 131 131 1.73% 2.05%
C 7580 6396 10 10 0.13% 0.16%
D 7580 6396 90 90 1.19% 1.41%

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 2927273 19032.35 742 725 153.8
A 13 248 45712 292.56 742 725 153.8
A 0 243 10283 62.16 742 725 153.8
B 15 201 626706 4316.07 743 721 145.0
B 3 112 89949 615.21 743 721 145.0
B 0 155 51456 349.81 743 721 145.0
C 14 254 73683 423.07 733 739 172.4
C 3 233 19940 111.36 733 739 172.4
C 12 249 8984 47.82 733 739 172.4
D 11 241 908659 4985.89 724 701 182.1
D 1 52 401192 2199.23 724 701 182.1
D 2 249 171881 940.0 724 701 182.1

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