ASTROSAT CZTI

Data Quality Report

Orbit 53829

Creation date: 2025-09-10T04:11:34.471207
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/AS1A14_022T04_9000006506_53829cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53829cztM0_level2_quad_clean.evt
Size (bytes)571,800,96088,274,880
Size545.3 MB 84.2 MB
Events in quadrant A2,959,077618,697
Events in quadrant B3,111,258658,188
Events in quadrant C8,328,316424,161
Events in quadrant D6,263,919518,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137731
B0139151
C0292301
D0230991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488570.878545%
B6488270.416153%
C6488189829.254007%
D64886309.710234%

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 7458 6489 36 36 0.48% 0.55%
B 7458 6489 15 15 0.20% 0.23%
C 7458 6489 1820 1820 24.40% 28.05%
D 7458 6488 653 653 8.76% 10.06%

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 0 8 136284 805.92 677 659 168.3
A 4 249 93866 553.86 677 659 168.3
A 13 254 15389 87.53 677 659 168.3
B 7 0 132493 916.02 673 650 143.9
B 8 234 69155 475.96 673 650 143.9
B 0 213 48682 333.72 673 650 143.9
C 1 241 4152519 26567.02 564 559 156.3
C 15 224 1535747 9823.16 564 559 156.3
C 12 2 124437 792.65 564 559 156.3
D 15 93 2482155 13639.84 639 612 181.9
D 10 172 353871 1941.69 639 612 181.9
D 2 120 135791 743.01 639 612 181.9

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