ASTROSAT CZTI

Data Quality Report

Orbit 58352

Creation date: 2026-07-22T13:00:22.665889
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_044T03_9000006588_58352cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58352cztM0_level2_quad_clean.evt
Size (bytes)373,985,28099,757,440
Size356.7 MB 95.1 MB
Events in quadrant A3,085,234653,542
Events in quadrant B3,958,669691,378
Events in quadrant C3,199,209629,756
Events in quadrant D3,095,439594,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138092
B0160302
C0141952
D0138342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487831.279482%
B64872614.023431%
C6487941.449052%
D6487170.262063%

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 8858 6490 26 26 0.29% 0.40%
B 8858 6489 83 83 0.94% 1.28%
C 8858 6490 59 59 0.67% 0.91%
D 8858 6490 5 5 0.06% 0.08%

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 2 143 102630 568.03 733 714 179.4
A 13 248 29639 161.21 733 714 179.4
A 12 80 27322 148.3 733 714 179.4
B 6 255 440101 2841.06 724 699 154.7
B 5 185 209271 1348.57 724 699 154.7
B 10 128 179376 1155.28 724 699 154.7
C 6 223 236226 1205.05 711 705 195.4
C 4 5 63778 322.71 711 705 195.4
C 7 12 19789 97.64 711 705 195.4
D 11 129 112698 559.62 709 677 200.2
D 11 176 57016 281.45 709 677 200.2
D 3 12 49751 245.16 709 677 200.2

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