ASTROSAT CZTI

Data Quality Report

Orbit 58735

Creation date: 2026-08-06T04:25:41.425191
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_004T06_9000006594_58735cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58735cztM0_level2_quad_clean.evt
Size (bytes)642,643,200106,761,600
Size612.9 MB 101.8 MB
Events in quadrant A3,611,050744,213
Events in quadrant B4,676,921767,466
Events in quadrant C4,044,563712,471
Events in quadrant D10,855,143469,812

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660284
B01947598
C01775071
D037824271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7739310.400569%
B77403304.263566%
C77421251.614570%
D7731254832.958220%

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 7745 7744 11 11 0.14% 0.14%
B 7752 7745 237 237 3.06% 3.06%
C 7749 7745 124 124 1.60% 1.60%
D 7739 7730 2560 2560 33.08% 33.12%

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 248797 1192.65 838 816 207.9
A 3 14 61888 293.72 838 816 207.9
A 13 254 14211 64.42 838 816 207.9
B 6 255 519600 2966.71 818 788 174.9
B 2 249 355998 2031.19 818 788 174.9
B 4 201 134652 765.47 818 788 174.9
C 6 223 298368 1334.37 818 811 223.0
C 13 3 205674 918.69 818 811 223.0
C 12 252 104871 466.65 818 811 223.0
D 11 129 7634030 38923.68 689 658 196.1
D 2 249 180784 918.49 689 658 196.1
D 12 248 109116 553.04 689 658 196.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct