ASTROSAT CZTI

Data Quality Report

Orbit 53674

Creation date: 2025-08-31T11:22:56.110477
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_022T05_9000006504_53674cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53674cztM0_level2_quad_clean.evt
Size (bytes)1,123,963,20067,167,360
Size1.0 GB 64.1 MB
Events in quadrant A13,244,390262,013
Events in quadrant B4,675,716687,298
Events in quadrant C11,826,750314,547
Events in quadrant D11,359,718317,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438071
B0181411
C0395301
D0382071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473425165.672795%
B64744326.672845%
C6474364556.302132%
D6474324050.046339%

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 7638 6473 3810 3810 49.88% 58.86%
B 7639 6474 244 244 3.19% 3.77%
C 7639 6474 3126 3126 40.92% 48.29%
D 7639 6474 2844 2844 37.23% 43.93%

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 3 63 8936870 66326.27 538 527 134.7
A 3 78 1260196 9349.37 538 527 134.7
A 15 174 360237 2669.8 538 527 134.7
B 5 185 870598 5602.35 725 703 155.3
B 7 0 499748 3213.98 725 703 155.3
B 2 249 102987 658.74 725 703 155.3
C 15 224 6887447 49432.34 507 502 139.3
C 1 241 2364128 16965.37 507 502 139.3
C 15 158 250581 1794.99 507 502 139.3
D 12 34 4965414 33798.23 502 480 146.9
D 8 176 3265194 22224.17 502 480 146.9
D 2 37 277271 1884.22 502 480 146.9

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