ASTROSAT CZTI

Data Quality Report

Orbit 55633

Creation date: 2026-01-09T22:15:57.520467
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_021T06_9000006538_55633cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55633cztM0_level2_quad_clean.evt
Size (bytes)512,645,76093,600,000
Size488.9 MB 89.3 MB
Events in quadrant A5,559,118577,024
Events in quadrant B2,923,857693,381
Events in quadrant C3,164,371611,033
Events in quadrant D6,801,642480,201

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214962
B0139622
C0147122
D0252592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678575711.156964%
B6786290.427350%
C6786540.795756%
D6786117617.329797%

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 8850 6787 728 728 8.23% 10.73%
B 8851 6788 3 3 0.03% 0.04%
C 8851 6788 51 51 0.58% 0.75%
D 8851 6786 1120 1120 12.65% 16.50%

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 12 115 2174964 13069.99 678 659 166.4
A 0 8 317419 1904.08 678 659 166.4
A 15 32 251147 1505.71 678 659 166.4
B 5 185 58608 388.08 699 674 149.3
B 0 171 38580 253.92 699 674 149.3
B 10 247 24205 157.63 699 674 149.3
C 6 9 247270 1318.38 682 673 187.0
C 9 38 168099 895.11 682 673 187.0
C 12 250 27094 141.25 682 673 187.0
D 11 129 3246669 18130.1 621 591 179.0
D 8 245 868345 4846.61 621 591 179.0
D 15 234 124303 690.96 621 591 179.0

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