ASTROSAT CZTI

Data Quality Report

Orbit 52643

Creation date: 2025-06-23T21:33:24.402362
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_9000006478_52643cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52643cztM0_level2_quad_clean.evt
Size (bytes)734,371,20083,327,040
Size700.4 MB 79.5 MB
Events in quadrant A4,284,233603,374
Events in quadrant B4,659,942643,313
Events in quadrant C9,533,693396,190
Events in quadrant D8,208,833431,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172562
B0185452
C0327962
D0288842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64232884.483886%
B64243886.039851%
C6424249438.823163%
D6424159924.891034%

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 7578 6424 185 185 2.44% 2.88%
B 7579 6425 271 271 3.58% 4.22%
C 7579 6424 2074 2074 27.37% 32.29%
D 7578 6424 1417 1417 18.70% 22.06%

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 3 14 505859 3076.56 655 638 164.2
A 5 243 300525 1826.17 655 638 164.2
A 4 95 265505 1612.92 655 638 164.2
B 10 128 924277 6698.43 655 633 137.9
B 4 158 535482 3878.82 655 633 137.9
B 10 247 98030 706.34 655 633 137.9
C 15 178 5364775 36602.49 526 521 146.6
C 15 248 1634830 11151.56 526 521 146.6
C 13 3 185676 1263.39 526 521 146.6
D 15 93 1805810 11065.63 565 539 163.1
D 8 176 1180012 7229.73 565 539 163.1
D 12 17 945317 5791.14 565 539 163.1

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