ASTROSAT CZTI

Data Quality Report

Orbit 53659

Creation date: 2025-08-31T12:31:26.222964
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_022T05_9000006504_53659cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53659cztM0_level2_quad_clean.evt
Size (bytes)2,297,655,360155,931,840
Size2.1 GB 148.7 MB
Events in quadrant A35,939,133153,570
Events in quadrant B9,992,3141,563,143
Events in quadrant C23,489,852814,095
Events in quadrant D14,473,9721,152,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03188
B03186
C031812
D03188

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0331
D0331

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01218504885
B0410981256
C0851055101
D0555081953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149261375792.168029%
B151466354.192526%
C14919653943.830015%
D15076214714.241178%

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 18968 15069 12351 12351 65.11% 81.96%
B 18969 15265 242 242 1.28% 1.59%
C 18970 15060 6062 6062 31.96% 40.25%
D 18970 15213 1857 1857 9.79% 12.21%

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 63 21170505 113945.27 754 737 185.8
A 14 254 5513412 29671.71 754 737 185.8
A 3 78 4427791 23828.41 754 737 185.8
B 5 172 1692664 4757.03 1667 1610 355.5
B 7 0 762643 2140.83 1667 1610 355.5
B 5 185 382007 1070.08 1667 1610 355.5
C 1 241 13775470 40122.42 1250 1240 343.3
C 15 224 2760525 8037.41 1250 1240 343.3
C 7 80 567670 1649.93 1250 1240 343.3
D 8 176 4384992 10198.74 1506 1440 429.8
D 10 172 2648066 6157.62 1506 1440 429.8
D 10 118 345583 800.68 1506 1440 429.8

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