ASTROSAT CZTI

Data Quality Report

Orbit 40748

Creation date: 2024-06-27T22:19:56.872388
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/AS1A12_068T02_9000005564_40748cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40748cztM0_level2_quad_clean.evt
Size (bytes)436,628,16086,256,000
Size416.4 MB 82.3 MB
Events in quadrant A2,771,155601,679
Events in quadrant B2,654,218610,338
Events in quadrant C5,666,177555,059
Events in quadrant D4,672,796485,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114223
B0113052
C0203262
D0174752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5123210.409916%
B51231362.654695%
C512362912.277962%
D512373114.268983%

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 7006 5124 8 8 0.11% 0.16%
B 7006 5123 112 112 1.60% 2.19%
C 7006 5124 704 704 10.05% 13.74%
D 7006 5124 283 283 4.04% 5.52%

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 10 83 458953 3911.9 573 561 117.2
A 13 248 34610 290.57 573 561 117.2
A 12 189 18711 154.89 573 561 117.2
B 0 229 345429 3206.07 563 545 107.6
B 4 171 36975 338.65 563 545 107.6
B 5 255 33633 307.58 563 545 107.6
C 9 187 3184877 24939.8 551 554 127.7
C 15 214 216249 1689.34 551 554 127.7
C 0 10 56797 440.5 551 554 127.7
D 12 128 1817722 13749.76 529 514 132.2
D 2 249 371084 2803.89 529 514 132.2
D 12 191 126017 949.61 529 514 132.2

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