ASTROSAT CZTI

Data Quality Report

Orbit 53371

Creation date: 2025-08-10T05:42:38.666020
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_011T09_9000006494_53371cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53371cztM0_level2_quad_clean.evt
Size (bytes)844,675,20083,937,600
Size805.5 MB 80.0 MB
Events in quadrant A3,709,230650,569
Events in quadrant B4,980,649678,960
Events in quadrant C15,710,142154,666
Events in quadrant D6,339,613582,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161582
B0196442
C0513872
D0235172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68102573.773862%
B68104486.578561%
C6810537278.883994%
D68104266.255507%

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 7645 6811 145 145 1.90% 2.13%
B 7645 6811 171 171 2.24% 2.51%
C 7645 6811 4879 4879 63.82% 71.63%
D 7645 6811 410 410 5.36% 6.02%

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 15 174 602635 3450.42 703 684 174.5
A 5 241 74798 424.83 703 684 174.5
A 8 6 57044 323.06 703 684 174.5
B 10 254 486257 3297.17 695 670 147.3
B 4 206 395751 2682.63 695 670 147.3
B 4 171 333185 2257.8 695 670 147.3
C 15 178 10615079 104028.95 369 364 102.0
C 1 241 1920372 18816.94 369 364 102.0
C 15 224 698399 6841.05 369 364 102.0
D 0 18 1612316 8345.66 684 656 193.1
D 11 245 351493 1816.74 684 656 193.1
D 12 35 331571 1713.58 684 656 193.1

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