ASTROSAT CZTI

Data Quality Report

Orbit 59355

Creation date: 2026-09-16T21:09:00.576550
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_59355cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59355cztM0_level2_quad_clean.evt
Size (bytes)477,017,280101,813,760
Size454.9 MB 97.1 MB
Events in quadrant A3,290,990680,369
Events in quadrant B3,628,740725,825
Events in quadrant C3,883,912647,852
Events in quadrant D6,346,050573,278

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143352
B0150342
C0158142
D0234132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65401301.987768%
B65402053.134557%
C65401522.324159%
D65396239.527451%

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 7715 6540 19 19 0.25% 0.29%
B 7715 6541 44 44 0.57% 0.67%
C 7715 6541 59 59 0.76% 0.90%
D 7714 6539 494 494 6.40% 7.55%

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 15 233 165431 881.87 768 749 186.7
A 10 251 104493 555.54 768 749 186.7
A 3 245 21500 111.12 768 749 186.7
B 4 236 200564 1251.13 750 724 159.7
B 4 171 114892 714.77 750 724 159.7
B 0 186 83610 518.92 750 724 159.7
C 12 252 327356 1609.65 745 740 202.9
C 3 233 192028 942.72 745 740 202.9
C 14 254 138070 676.8 745 740 202.9
D 12 110 2544058 12358.58 729 697 205.8
D 3 12 283004 1371.77 729 697 205.8
D 2 62 189588 917.85 729 697 205.8

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