ASTROSAT CZTI

Data Quality Report

Orbit 57664

Creation date: 2026-05-26T04:08:35.826557
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_125T09_9000006578_57664cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57664cztM0_level2_quad_clean.evt
Size (bytes)627,768,000129,188,160
Size598.7 MB 123.2 MB
Events in quadrant A3,972,892869,037
Events in quadrant B4,384,674922,195
Events in quadrant C6,713,344810,813
Events in quadrant D7,459,540677,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185191
B0195661
C0263351
D0284731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9112480.526778%
B91132012.205640%
C91134124.521014%
D9113118112.959508%

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 10507 9113 1 1 0.01% 0.01%
B 10508 9115 71 71 0.68% 0.78%
C 10508 9114 357 357 3.40% 3.92%
D 10508 9115 1051 1051 10.00% 11.53%

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 14 39795 158.89 999 972 244.3
A 8 4 23333 91.52 999 972 244.3
A 8 9 18205 70.53 999 972 244.3
B 10 16 198395 938.28 979 941 210.4
B 5 172 111314 524.48 979 941 210.4
B 0 156 33239 153.48 979 941 210.4
C 15 224 1155143 4447.97 953 944 259.5
C 12 254 1078793 4153.74 953 944 259.5
C 14 254 546063 2100.74 953 944 259.5
D 8 240 3030615 12008.94 895 857 252.3
D 2 249 271880 1074.24 895 857 252.3
D 3 12 114325 449.75 895 857 252.3

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