ASTROSAT CZTI

Data Quality Report

Orbit 54819

Creation date: 2025-11-15T16:33:45.196701
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_039T06_9000006526_54819cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54819cztM0_level2_quad_clean.evt
Size (bytes)595,051,20084,421,440
Size567.5 MB 80.5 MB
Events in quadrant A2,616,898603,946
Events in quadrant B3,990,244624,833
Events in quadrant C4,689,413565,246
Events in quadrant D10,236,205318,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129111
B0163814
C0183291
D0347597

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360430.676101%
B63602654.166667%
C63621953.065074%
D6361284644.741393%

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 7356 6362 0 0 0.00% 0.00%
B 7356 6362 171 171 2.32% 2.69%
C 7357 6363 225 225 3.06% 3.54%
D 7357 6363 2749 2749 37.37% 43.20%

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 5 241 14775 85.82 666 649 164.6
A 13 254 12495 71.97 666 649 164.6
A 3 137 7788 43.37 666 649 164.6
B 2 249 950301 6819.2 644 617 139.3
B 5 185 300210 2151.22 644 617 139.3
B 10 247 105953 756.36 644 617 139.3
C 4 5 747919 4262.16 637 632 175.3
C 9 38 646705 3684.89 637 632 175.3
C 14 254 274398 1561.43 637 632 175.3
D 15 94 5907537 43059.68 479 458 137.2
D 10 181 1306014 9516.86 479 458 137.2
D 1 31 526828 3836.98 479 458 137.2

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