ASTROSAT CZTI

Data Quality Report

Orbit 56504

Creation date: 2026-03-09T01:30:37.032620
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_060T01_9000006556_56504cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56504cztM0_level2_quad_clean.evt
Size (bytes)421,410,24097,012,800
Size401.9 MB 92.5 MB
Events in quadrant A3,674,746636,160
Events in quadrant B3,567,165678,296
Events in quadrant C3,754,991596,689
Events in quadrant D4,086,599563,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155452
B0152292
C0160552
D0167934

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6630370.558069%
B66301592.398190%
C66312193.302669%
D66301532.307692%

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 7680 6631 34 34 0.44% 0.51%
B 7680 6631 80 80 1.04% 1.21%
C 7681 6632 191 191 2.49% 2.88%
D 7680 6631 151 151 1.97% 2.28%

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 4 95 400663 2218.46 715 694 180.3
A 7 64 126458 697.56 715 694 180.3
A 3 14 103028 567.6 715 694 180.3
B 4 206 455780 2967.78 708 683 153.3
B 4 171 104244 675.34 708 683 153.3
B 4 21 43032 276.17 708 683 153.3
C 3 248 325402 1699.1 686 676 191.1
C 13 3 291058 1519.4 686 676 191.1
C 6 223 278854 1455.54 686 676 191.1
D 2 249 672832 3446.98 679 648 195.0
D 3 12 292678 1497.54 679 648 195.0
D 2 252 109495 558.17 679 648 195.0

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