ASTROSAT CZTI

Data Quality Report

Orbit 56670

Creation date: 2026-03-20T06:38:12.447748
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_083T06_9000006558_56670cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56670cztM0_level2_quad_clean.evt
Size (bytes)436,487,040101,952,000
Size416.3 MB 97.2 MB
Events in quadrant A3,507,417666,159
Events in quadrant B3,331,814723,537
Events in quadrant C4,492,231619,916
Events in quadrant D4,272,187581,661

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158112
B0149732
C0182822
D0179672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7121991.390254%
B7121670.940879%
C71201852.598315%
D71201972.766854%

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 7616 7121 71 71 0.93% 1.00%
B 7616 7121 18 18 0.24% 0.25%
C 7615 7121 175 175 2.30% 2.46%
D 7615 7120 164 164 2.15% 2.30%

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 10 251 239830 1290.57 753 734 185.3
A 8 26 176937 951.09 753 734 185.3
A 8 249 67478 360.26 753 734 185.3
B 0 63 119727 738.24 751 723 161.2
B 4 21 61176 375.02 751 723 161.2
B 10 247 44608 272.24 751 723 161.2
C 9 38 460182 2340.68 723 715 196.3
C 15 230 307466 1562.69 723 715 196.3
C 12 252 245433 1246.67 723 715 196.3
D 2 31 429297 2127.1 716 684 201.5
D 2 249 338797 1677.97 716 684 201.5
D 8 129 156306 772.31 716 684 201.5

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