ASTROSAT CZTI

Data Quality Report

Orbit 53602

Creation date: 2025-08-25T18:58:32.333239
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_004T05_9000006502_53602cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53602cztM0_level2_quad_clean.evt
Size (bytes)713,099,52081,083,520
Size680.1 MB 77.3 MB
Events in quadrant A3,913,649593,203
Events in quadrant B5,385,694602,216
Events in quadrant C8,252,352451,726
Events in quadrant D8,381,710389,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155951
B0200901
C0286641
D0289076

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59843886.483957%
B598468311.413770%
C5984174929.227941%
D5984201733.706551%

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 7082 5990 187 187 2.64% 3.12%
B 7082 5990 385 385 5.44% 6.43%
C 7081 5989 1413 1413 19.95% 23.59%
D 7081 5989 1855 1855 26.20% 30.97%

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 346870 2085.25 674 657 166.0
A 15 174 238064 1429.91 674 657 166.0
A 12 115 224461 1347.98 674 657 166.0
B 4 206 955643 6926.09 650 628 137.9
B 10 28 805227 5835.22 650 628 137.9
B 5 172 333577 2414.66 650 628 137.9
C 15 224 3563693 22167.45 583 578 160.7
C 15 231 807149 5017.98 583 578 160.7
C 13 3 600771 3734.02 583 578 160.7
D 8 176 4565179 26537.19 594 565 172.0
D 3 12 342134 1985.77 594 565 172.0
D 2 62 287945 1670.73 594 565 172.0

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