ASTROSAT CZTI

Data Quality Report

Orbit 59365

Creation date: 2026-09-17T14:10:33.425473
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_033T01_9000006608_59365cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59365cztM0_level2_quad_clean.evt
Size (bytes)461,571,84095,503,680
Size440.2 MB 91.1 MB
Events in quadrant A2,896,357627,892
Events in quadrant B4,152,437665,903
Events in quadrant C3,575,852614,754
Events in quadrant D5,936,405512,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137471
B0170511
C0151191
D0224731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6747791.170891%
B67473164.683563%
C6747911.348748%
D674792013.635690%

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 7527 6747 2 2 0.03% 0.03%
B 7527 6747 180 180 2.39% 2.67%
C 7527 6747 49 49 0.65% 0.73%
D 7527 6747 777 777 10.32% 11.52%

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 3 245 29167 160.73 729 713 177.0
A 13 153 19534 106.32 729 713 177.0
A 10 251 11015 58.19 729 713 177.0
B 4 236 683166 4424.37 714 686 154.3
B 5 185 257052 1661.97 714 686 154.3
B 4 171 208113 1344.71 714 686 154.3
C 12 252 450569 2294.57 710 704 196.1
C 15 1 81337 411.28 710 704 196.1
C 3 233 65981 332.95 710 704 196.1
D 12 110 1410871 7368.61 669 639 191.4
D 1 27 1151548 6013.62 669 639 191.4
D 12 2 562846 2937.59 669 639 191.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct