ASTROSAT CZTI

Data Quality Report

Orbit 53472

Creation date: 2025-08-17T00:44:52.597276
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_002T06_9000006496_53472cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53472cztM0_level2_quad_clean.evt
Size (bytes)740,995,20093,360,960
Size706.7 MB 89.0 MB
Events in quadrant A7,960,374597,608
Events in quadrant B3,879,699737,219
Events in quadrant C10,875,256419,131
Events in quadrant D4,185,638597,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284822
B0162152
C0370582
D0173362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6822129118.924069%
B68222904.250953%
C6823277940.729884%
D68222633.855174%

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 9037 6823 959 959 10.61% 14.06%
B 9037 6823 42 42 0.46% 0.62%
C 9038 6824 2385 2385 26.39% 34.95%
D 9037 6823 132 132 1.46% 1.93%

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 3 63 2639562 14407.06 744 723 183.2
A 3 62 1538883 8397.77 744 723 183.2
A 15 174 617639 3368.13 744 723 183.2
B 4 216 233439 1396.25 779 751 166.7
B 10 28 182654 1091.51 779 751 166.7
B 1 255 79273 471.17 779 751 166.7
C 15 224 3421643 19913.65 628 622 171.8
C 1 241 2467829 14361.53 628 622 171.8
C 7 64 1865147 10853.34 628 622 171.8
D 3 12 398255 1885.93 759 727 210.8
D 2 249 287356 1359.81 759 727 210.8
D 8 176 118315 557.85 759 727 210.8

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