ASTROSAT CZTI

Data Quality Report

Orbit 57554

Creation date: 2026-05-18T17:11:44.639557
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_113T09_9000006574_57554cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57554cztM0_level2_quad_clean.evt
Size (bytes)472,728,96099,066,240
Size450.8 MB 94.5 MB
Events in quadrant A4,367,974653,061
Events in quadrant B3,344,488698,602
Events in quadrant C3,974,434624,391
Events in quadrant D5,297,913562,390

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176872
B0145641
C0165001
D0202821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66171382.085537%
B66181532.311877%
C66182113.188274%
D66185197.842248%

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 7712 6617 8 8 0.10% 0.12%
B 7712 6617 51 51 0.66% 0.77%
C 7713 6619 129 129 1.67% 1.95%
D 7713 6618 481 481 6.24% 7.27%

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 14 1421805 7893.83 734 716 180.0
A 13 248 31090 168.72 734 716 180.0
A 8 249 29222 158.34 734 716 180.0
B 4 142 157877 1027.13 717 690 153.0
B 5 185 102999 668.53 717 690 153.0
B 7 252 64316 415.76 717 690 153.0
C 15 224 1115241 5761.47 709 699 193.4
C 12 254 32282 163.26 709 699 193.4
C 14 254 19205 95.66 709 699 193.4
D 8 160 1256743 6355.45 700 667 197.6
D 15 142 719694 3638.11 700 667 197.6
D 3 12 115215 579.59 700 667 197.6

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