ASTROSAT CZTI

Data Quality Report

Orbit 59309

Creation date: 2026-09-13T18:11:58.246324
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_021T06_9000006606_59309cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59309cztM0_level2_quad_clean.evt
Size (bytes)643,055,04093,375,360
Size613.3 MB 89.0 MB
Events in quadrant A3,915,969666,837
Events in quadrant B3,587,429717,094
Events in quadrant C3,327,717633,181
Events in quadrant D12,440,180332,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164911
B0154681
C0149461
D0416961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68532042.976798%
B68542423.530785%
C6854951.386052%
D6854339349.503939%

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 7823 6853 180 180 2.30% 2.63%
B 7824 6854 144 144 1.84% 2.10%
C 7824 6854 64 64 0.82% 0.93%
D 7823 6853 3414 3414 43.64% 49.82%

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 7 64 849676 4636.98 746 727 183.1
A 3 245 85026 460.44 746 727 183.1
A 14 238 63533 343.05 746 727 183.1
B 4 236 283756 1806.0 734 708 156.7
B 4 201 163270 1037.23 734 708 156.7
B 10 247 48366 304.08 734 708 156.7
C 12 252 159105 807.4 716 709 196.2
C 15 1 131148 664.9 716 709 196.2
C 15 200 102470 518.71 716 709 196.2
D 12 110 8552772 49706.39 599 570 172.1
D 11 129 677852 3936.44 599 570 172.1
D 12 2 631307 3665.92 599 570 172.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct