ASTROSAT CZTI

Data Quality Report

Orbit 58714

Creation date: 2026-08-04T19:13:33.497940
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_004T06_9000006594_58714cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58714cztM0_level2_quad_clean.evt
Size (bytes)630,204,48088,056,000
Size601.0 MB 84.0 MB
Events in quadrant A4,303,380629,015
Events in quadrant B3,962,061674,897
Events in quadrant C3,228,443607,873
Events in quadrant D11,337,993308,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017241121
B01613788
C01426378
D038198227

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01302
C01300
D01302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63892904.539051%
B63932423.785390%
C6392981.533166%
D6383331751.966160%

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 7496 6404 181 181 2.41% 2.83%
B 7490 6405 93 93 1.24% 1.45%
C 7492 6405 44 44 0.59% 0.69%
D 7479 6392 3057 3057 40.87% 47.83%

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 12 114 1170991 6579.14 719 703 177.9
A 3 14 249701 1399.82 719 703 177.9
A 10 251 54038 299.84 719 703 177.9
B 5 172 454789 3032.03 702 677 149.8
B 6 255 160071 1064.25 702 677 149.8
B 8 128 139715 928.33 702 677 149.8
C 6 223 135788 703.43 697 692 192.1
C 12 252 106423 550.53 697 692 192.1
C 13 3 78047 402.78 697 692 192.1
D 11 129 8003622 53557.15 524 499 149.4
D 2 249 807822 5402.63 524 499 149.4
D 8 160 183088 1221.89 524 499 149.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct