ASTROSAT CZTI

Data Quality Report

Orbit 20220410_A11_093T01_9000005064_level2

Creation date: 2026-01-02T10:28:05.838463
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/AS1A11_093T01_9000005064cztM0_level2.fits modeM0/AS1A11_093T01_9000005064cztM0_level2_quad_clean.evt
Size (bytes)1,045,742,4001,113,837,120
Size997.3 MB 1.0 GB
Events in quadrant A6,475,1226,937,562
Events in quadrant B5,646,1206,021,024
Events in quadrant C6,341,8286,914,842
Events in quadrant D5,409,0086,072,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02442280
B04108960
C02538110
D03091280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023180
B023180
C023180
D023180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04370
B04370
C04370
D04370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11362910420.917019%
B1136292147318.897465%
C11362914431.269922%
D11362843943.867005%

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 157307 113614 0 0 0.00% 0.00%
B 157307 113272 0 0 0.00% 0.00%
C 157307 113592 0 0 0.00% 0.00%
D 157307 113463 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 9 19 5241 8.82 1695 1600 412.8
A 7 110 5213 8.75 1695 1600 412.8
A 0 29 5183 8.68 1695 1600 412.8
B 2 9 4952 12.21 1494 1431 288.2
B 3 80 4215 9.66 1494 1431 288.2
B 2 8 3963 8.78 1494 1431 288.2
C 1 81 5413 8.89 1677 1577 431.3
C 1 80 5251 8.52 1677 1577 431.3
C 3 202 4959 7.84 1677 1577 431.3
D 10 189 3965 6.2 1548 1413 411.6
D 7 3 3953 6.17 1548 1413 411.6
D 4 160 3951 6.17 1548 1413 411.6

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