ASTROSAT CZTI

Data Quality Report

Orbit 52231

Creation date: 2025-06-23T12:50:40.149723
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_011T08_9000006472_52231cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52231cztM0_level2_quad_clean.evt
Size (bytes)620,213,76075,024,000
Size591.5 MB 71.5 MB
Events in quadrant A5,048,261502,819
Events in quadrant B4,276,190563,339
Events in quadrant C8,925,590322,154
Events in quadrant D4,254,311473,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019498435
B017076333
C031248687
D017056286

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01211
B01211
C01222
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58495419.249444%
B58612424.128988%
C5845255043.627032%
D58592684.574159%

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 7000 5868 525 525 7.50% 8.95%
B 7001 5877 149 149 2.13% 2.54%
C 7001 5865 2281 2281 32.58% 38.89%
D 7001 5878 265 265 3.79% 4.51%

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 12 3 938800 6434.72 588 574 145.8
A 4 249 793239 5436.4 588 574 145.8
A 6 162 415141 2843.26 588 574 145.8
B 5 32 888755 6993.98 593 573 127.0
B 10 254 243518 1913.06 593 573 127.0
B 7 236 159932 1254.87 593 573 127.0
C 15 224 6006663 47241.73 449 445 127.1
C 15 231 428481 3366.7 449 445 127.1
C 13 3 175275 1375.12 449 445 127.1
D 12 2 569144 3472.18 574 549 163.8
D 6 42 425077 2592.42 574 549 163.8
D 8 176 320867 1956.05 574 549 163.8

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