ASTROSAT CZTI

Data Quality Report

Orbit 20190730_A05_063T03_9000003066_level2

Creation date: 2025-12-02T19:38:00.173163
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/AS1A05_063T03_9000003066cztM0_level2.fits modeM0/AS1A05_063T03_9000003066cztM0_level2_quad_clean.evt
Size (bytes)573,963,840231,528,960
Size547.4 MB 220.8 MB
Events in quadrant A3,682,278841,379
Events in quadrant B3,442,836813,757
Events in quadrant C3,348,912794,711
Events in quadrant D3,058,702705,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01188290
B01251850
C01181680
D01537710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011480
B011460
C011450
D011460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561527001.246616%
B5607911031.966868%
C561449501.692078%
D5605825134.482857%

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 67620 56326 0 0 0.00% 0.00%
B 67621 56220 0 0 0.00% 0.00%
C 67621 56290 0 0 0.00% 0.00%
D 67621 56177 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 3557 11.42 958 901 232.7
A 7 110 2967 8.88 958 901 232.7
A 0 30 2835 8.31 958 901 232.7
B 2 9 2642 9.95 911 871 178.0
B 2 8 2262 7.82 911 871 178.0
B 3 17 2251 7.75 911 871 178.0
C 1 81 2594 8.66 888 855 200.7
C 3 203 2090 6.15 888 855 200.7
C 12 249 2083 6.12 888 855 200.7
D 13 238 2200 6.06 874 799 231.0
D 6 231 2160 5.89 874 799 231.0
D 6 38 2140 5.8 874 799 231.0

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