ASTROSAT CZTI

Data Quality Report

Orbit 50382

Creation date: 2025-01-21T08:50:57.049415
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/AS1C09_003T01_9000006442_50382cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50382cztM0_level2_quad_clean.evt
Size (bytes)1,048,731,84076,331,520
Size1000.1 MB 72.8 MB
Events in quadrant A5,083,141639,607
Events in quadrant B4,921,827679,280
Events in quadrant C11,232,211431,564
Events in quadrant D17,038,53269,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198720
B0194910
C0383050
D0552990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70532563.629661%
B70534506.380264%
C7053249035.304126%
D7053642291.053452%

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 7053 7053 232 232 3.29% 3.29%
B 7053 7053 343 343 4.86% 4.86%
C 7053 7053 2406 2406 34.11% 34.11%
D 7052 7052 6314 6314 89.53% 89.53%

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 63 835679 4523.35 736 717 184.6
A 4 3 374426 2024.54 736 717 184.6
A 3 14 251024 1356.02 736 717 184.6
B 10 43 957347 6121.8 726 701 156.3
B 5 185 237263 1513.82 726 701 156.3
B 0 213 152844 973.6 726 701 156.3
C 15 127 1678833 9405.27 632 628 178.4
C 0 208 1241903 6956.56 632 628 178.4
C 14 245 863280 4834.62 632 628 178.4
D 7 61 10961640 88505.13 418 402 123.8
D 15 169 753982 6084.69 418 402 123.8
D 7 60 524522 4231.94 418 402 123.8

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