ASTROSAT CZTI

Data Quality Report

Orbit 15495

Creation date: 2024-06-27T17:09:19.015690
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/AS1G08_039T01_9000002292_15495cztM0_level2.evt modeM0/AS1G08_039T01_9000002292_15495cztM0_level2_quad_clean.evt
Size (bytes)930,101,760159,217,920
Size887.0 MB 151.8 MB
Events in quadrant A7,185,746993,640
Events in quadrant B6,381,5831,019,198
Events in quadrant C6,928,348974,208
Events in quadrant D6,809,356953,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297193
B0272542
C0286682
D0289642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127662862.240326%
B12766810.634498%
C12766720.563998%
D127661321.033997%

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 14052 12769 176 176 1.25% 1.38%
B 14052 12769 10 10 0.07% 0.08%
C 14052 12769 0 0 0.00% 0.00%
D 14052 12769 108 108 0.77% 0.85%

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 14 237 927879 3058.49 1494 1463 302.9
A 14 238 398789 1311.74 1494 1463 302.9
A 4 2 73338 237.29 1494 1463 302.9
B 4 142 153649 529.84 1507 1468 287.2
B 0 189 88690 303.68 1507 1468 287.2
B 10 245 57129 193.79 1507 1468 287.2
C 3 233 1074198 3198.99 1436 1442 335.3
C 14 238 220531 653.33 1436 1442 335.3
C 8 128 14661 39.42 1436 1442 335.3
D 5 222 740592 2074.44 1450 1407 356.3
D 1 52 128422 356.45 1450 1407 356.3
D 12 221 105708 292.71 1450 1407 356.3

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