ASTROSAT CZTI

Data Quality Report

Orbit 58507

Creation date: 2026-07-21T21:32:59.117775
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_044T04_9000006592_58507cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58507cztM0_level2_quad_clean.evt
Size (bytes)985,023,360204,312,960
Size939.4 MB 194.8 MB
Events in quadrant A8,353,2031,327,104
Events in quadrant B7,635,6271,434,190
Events in quadrant C8,155,4411,281,257
Events in quadrant D11,200,7151,147,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345723
B0324573
C0343783
D0428793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144207855.443828%
B144205533.834951%
C144205673.932039%
D1442012418.606103%

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 15730 14421 336 336 2.14% 2.33%
B 15730 14422 94 94 0.60% 0.65%
C 15730 14424 231 231 1.47% 1.60%
D 15730 14424 847 847 5.38% 5.87%

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 12 80 905829 2271.3 1627 1585 398.1
A 3 14 223034 556.24 1627 1585 398.1
A 10 17 222019 553.69 1627 1585 398.1
B 5 185 377683 1076.72 1623 1561 349.3
B 8 234 195632 555.57 1623 1561 349.3
B 4 171 103270 291.16 1623 1561 349.3
C 4 5 1005512 2290.3 1600 1581 438.3
C 15 157 277385 629.2 1600 1581 438.3
C 6 223 172946 390.94 1600 1581 438.3
D 3 12 2344879 5280.88 1570 1500 443.7
D 8 240 1495496 3366.77 1570 1500 443.7
D 2 31 524300 1178.15 1570 1500 443.7

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