ASTROSAT CZTI

Data Quality Report

Orbit 53810

Creation date: 2025-09-08T19:30:36.350951
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_022T04_9000006506_53810cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53810cztM0_level2_quad_clean.evt
Size (bytes)766,543,68051,664,320
Size731.0 MB 49.3 MB
Events in quadrant A10,946,992133,601
Events in quadrant B2,700,106503,703
Events in quadrant C4,522,273415,913
Events in quadrant D9,818,085159,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382912310
B012561847
C0184401531
D0366974140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01075
B01099
C011010
D01061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022
B044
C033
D044

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981369374.141739%
B5079681.338846%
C50364278.478952%
D4901309063.048357%

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 7263 5071 3401 3401 46.83% 67.07%
B 7264 5165 42 42 0.58% 0.81%
C 7264 5136 309 309 4.25% 6.02%
D 7264 4923 2857 2857 39.33% 58.03%

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 9297677 107149.39 344 336 86.8
A 4 249 113333 1302.26 344 336 86.8
A 8 249 68311 783.39 344 336 86.8
B 5 185 347621 2969.33 539 519 116.9
B 0 213 44942 380.02 539 519 116.9
B 7 252 43919 371.27 539 519 116.9
C 15 224 1400789 9832.06 511 507 142.4
C 15 157 364549 2556.12 511 507 142.4
C 15 158 169707 1188.04 511 507 142.4
D 8 176 7570014 93756.03 279 267 80.7
D 1 241 311672 3856.94 279 267 80.7
D 7 70 197083 2437.69 279 267 80.7

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