ASTROSAT CZTI

Data Quality Report

Orbit 53961

Creation date: 2025-09-19T11:34:52.072462
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_057T04_9000006508_53961cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53961cztM0_level2_quad_clean.evt
Size (bytes)524,972,16083,070,720
Size500.7 MB 79.2 MB
Events in quadrant A3,477,325582,350
Events in quadrant B3,782,866601,885
Events in quadrant C3,165,088545,169
Events in quadrant D8,530,184356,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147101
B0156321
C0141472
D0296191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61371913.112270%
B61372844.627668%
C61361812.949804%
D6136220735.968057%

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 7117 6138 134 134 1.88% 2.18%
B 7117 6138 140 140 1.97% 2.28%
C 7116 6137 137 137 1.93% 2.23%
D 7116 6136 1502 1502 21.11% 24.48%

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 0 8 377225 2326.69 650 633 161.9
A 13 248 161270 992.46 650 633 161.9
A 7 14 150436 925.52 650 633 161.9
B 0 213 410739 2996.71 639 617 136.9
B 2 249 329606 2403.88 639 617 136.9
B 5 250 152273 1108.13 639 617 136.9
C 1 241 334661 1924.59 628 621 173.6
C 12 2 207405 1191.39 628 621 173.6
C 13 3 45386 257.91 628 621 173.6
D 8 176 4242934 30614.79 482 460 138.6
D 6 239 631292 4552.25 482 460 138.6
D 3 12 504128 3634.6 482 460 138.6

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