ASTROSAT CZTI

Data Quality Report

Orbit 59409

Creation date: 2026-09-20T13:06:30.702023
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_59409cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59409cztM0_level2_quad_clean.evt
Size (bytes)411,384,96099,846,720
Size392.3 MB 95.2 MB
Events in quadrant A3,514,515641,771
Events in quadrant B4,032,962684,094
Events in quadrant C3,758,425625,201
Events in quadrant D3,386,934593,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152632
B0168142
C0161373
D0150292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68771091.584993%
B68773334.842228%
C68761772.574171%
D6876640.930774%

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 7782 6879 34 34 0.44% 0.49%
B 7782 6879 158 158 2.03% 2.30%
C 7781 6878 124 124 1.59% 1.80%
D 7781 6878 19 19 0.24% 0.28%

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 14 238 490137 2696.37 743 724 181.5
A 14 254 72548 395.71 743 724 181.5
A 0 24 34001 183.34 743 724 181.5
B 5 172 626475 4007.37 728 699 156.2
B 6 255 215934 1378.33 728 699 156.2
B 5 185 101072 642.77 728 699 156.2
C 4 5 661919 3337.25 723 717 198.1
C 6 223 134718 676.34 723 717 198.1
C 2 12 61507 306.82 723 717 198.1
D 13 138 202114 989.48 722 688 203.6
D 12 110 201202 985.0 722 688 203.6
D 2 249 43219 208.93 722 688 203.6

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