ASTROSAT CZTI

Data Quality Report

Orbit 53225

Creation date: 2025-08-01T11:30:04.964709
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/AS1C09_011T06_9000006490_53225cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53225cztM0_level2_quad_clean.evt
Size (bytes)637,545,60091,460,160
Size608.0 MB 87.2 MB
Events in quadrant A3,471,053639,815
Events in quadrant B4,601,545665,814
Events in quadrant C9,726,523426,304
Events in quadrant D5,278,762567,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154262
B0184483
C0336092
D0205352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67301131.679049%
B67294316.405112%
C6729224333.333333%
D67293475.156784%

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 7805 6731 86 86 1.10% 1.28%
B 7804 6730 317 317 4.06% 4.71%
C 7804 6729 2077 2077 26.61% 30.87%
D 7804 6730 297 297 3.81% 4.41%

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 15 174 167959 977.66 683 667 171.1
A 3 62 158371 921.63 683 667 171.1
A 7 206 118970 691.37 683 667 171.1
B 2 249 1317047 9307.83 673 652 141.4
B 4 81 229473 1617.92 673 652 141.4
B 5 185 65480 458.38 673 652 141.4
C 1 241 3755567 24621.05 549 543 152.5
C 15 224 1330152 8718.02 549 543 152.5
C 9 38 841556 5514.38 549 543 152.5
D 6 239 568143 2983.4 651 621 190.2
D 12 3 487804 2561.07 651 621 190.2
D 11 176 447250 2347.88 651 621 190.2

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