ASTROSAT CZTI

Data Quality Report

Orbit 20200703_A07_027T11_9000003752_level2

Creation date: 2025-12-13T06:06:01.132504
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/AS1A07_027T11_9000003752cztM0_level2.fits modeM0/AS1A07_027T11_9000003752cztM0_level2_quad_clean.evt
Size (bytes)232,217,280241,119,360
Size221.5 MB 229.9 MB
Events in quadrant A1,412,1261,479,382
Events in quadrant B1,357,4601,487,962
Events in quadrant C1,387,1161,403,248
Events in quadrant D1,209,8201,266,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503430
B0504290
C0511060
D0601260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242076452.664519%
B242077293.011526%
C242067373.044700%
D242079744.023630%

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 25457 24204 0 0 0.00% 0.00%
B 25457 24201 0 0 0.00% 0.00%
C 25457 24201 0 0 0.00% 0.00%
D 25457 24195 0 0 0.00% 0.00%

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 0 29 1341 10.79 367 344 92.4
A 7 110 1194 9.2 367 344 92.4
A 0 30 1064 7.79 367 344 92.4
B 2 9 1033 9.55 357 339 72.7
B 5 225 928 8.1 357 339 72.7
B 3 17 899 7.7 357 339 72.7
C 12 241 988 6.9 365 340 93.9
C 2 191 961 6.61 365 340 93.9
C 9 209 950 6.5 365 340 93.9
D 6 231 871 6.0 344 313 93.0
D 6 67 869 5.98 344 313 93.0
D 4 246 848 5.75 344 313 93.0

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