ASTROSAT CZTI

Data Quality Report

Orbit 52596

Creation date: 2025-06-19T01:07:14.120270
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/AS1C09_011T06_9000006478_52596cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52596cztM0_level2_quad_clean.evt
Size (bytes)990,216,00067,867,200
Size944.3 MB 64.7 MB
Events in quadrant A3,544,340609,147
Events in quadrant B7,071,761563,759
Events in quadrant C12,246,185221,844
Events in quadrant D13,300,761216,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150311
B0254121
C0407435
D0438691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63611943.049835%
B6362109617.227287%
C6361419665.964471%
D6361437468.762773%

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 7365 6360 140 140 1.90% 2.20%
B 7366 6361 845 845 11.47% 13.28%
C 7365 6360 3613 3613 49.06% 56.81%
D 7365 6360 4196 4196 56.97% 65.97%

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 4 249 308618 1821.65 668 651 169.1
A 5 243 193245 1139.21 668 651 169.1
A 3 114 76525 448.8 668 651 169.1
B 10 254 3067886 22674.66 639 618 135.3
B 10 128 401203 2961.31 639 618 135.3
B 15 219 394191 2909.47 639 618 135.3
C 15 248 10638076 111741.41 338 335 95.2
C 15 233 79221 828.64 338 335 95.2
C 13 3 45472 474.13 338 335 95.2
D 12 1 3233403 26760.02 419 401 120.8
D 15 125 2771298 22935.11 419 401 120.8
D 8 176 2664711 22052.88 419 401 120.8

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