ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A11_030T02_9000005310_level2

Creation date: 2026-01-05T00:55:12.886447
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_030T02_9000005310cztM0_level2.fits modeM0/AS1A11_030T02_9000005310cztM0_level2_quad_clean.evt
Size (bytes)1,171,088,6401,100,021,760
Size1.1 GB 1.0 GB
Events in quadrant A7,145,5746,628,242
Events in quadrant B6,830,5706,630,063
Events in quadrant C6,979,2766,193,499
Events in quadrant D5,822,9165,182,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02853010
B02913220
C03190520
D04002760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025920
B025920
C025920
D025920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12665517191.357230%
B12665529772.350480%
C12665546143.642967%
D1266551467711.588173%

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 174811 126432 0 0 0.00% 0.00%
B 174811 126590 0 0 0.00% 0.00%
C 174811 126588 0 0 0.00% 0.00%
D 174811 126519 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 5922 9.08 1873 1757 458.8
A 7 110 5843 8.91 1873 1757 458.8
A 0 29 5646 8.48 1873 1757 458.8
B 2 9 5967 12.01 1813 1731 352.8
B 3 80 5368 10.31 1813 1731 352.8
B 2 8 4830 8.78 1813 1731 352.8
C 1 81 5855 8.75 1846 1731 471.3
C 1 80 5665 8.35 1846 1731 471.3
C 3 203 5568 8.14 1846 1731 471.3
D 7 3 4252 6.2 1667 1525 440.2
D 4 160 4229 6.14 1667 1525 440.2
D 6 38 4210 6.1 1667 1525 440.2

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