ASTROSAT CZTI

Data Quality Report

Orbit 20220409_T05_023T01_9000005058_level2

Creation date: 2026-01-02T10:22:43.558429
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/AS1T05_023T01_9000005058cztM0_level2.fits modeM0/AS1T05_023T01_9000005058cztM0_level2_quad_clean.evt
Size (bytes)705,216,960665,930,880
Size672.5 MB 635.1 MB
Events in quadrant A4,487,8804,317,145
Events in quadrant B3,697,4223,125,535
Events in quadrant C4,357,8544,146,719
Events in quadrant D3,579,0383,353,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01854540
B03400620
C01725990
D02505670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02970
B02970
C02970
D02970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015540
B015540
C015540
D015540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A761577400.971677%
B761582240729.421729%
C761589831.290738%
D7615870799.295150%

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 104215 76156 0 0 0.00% 0.00%
B 104215 75852 0 0 0.00% 0.00%
C 104215 76130 0 0 0.00% 0.00%
D 104215 75443 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 3644 9.03 1172 1109 280.6
A 7 110 3609 8.91 1172 1109 280.6
A 0 29 3600 8.88 1172 1109 280.6
B 2 9 3261 12.18 977 933 191.1
B 3 80 2800 9.77 977 933 191.1
B 2 8 2615 8.8 977 933 191.1
C 1 81 3687 8.86 1150 1079 294.5
C 1 80 3576 8.48 1150 1079 294.5
C 3 203 3465 8.1 1150 1079 294.5
D 10 189 2669 6.44 1025 940 268.3
D 4 160 2612 6.23 1025 940 268.3
D 6 67 2550 6.0 1025 940 268.3

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