ASTROSAT CZTI

Data Quality Report

Orbit 59422

Creation date: 2026-09-21T10:25:19.379362
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_033T01_9000006608_59422cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59422cztM0_level2_quad_clean.evt
Size (bytes)1,418,103,360282,888,000
Size1.3 GB 269.8 MB
Events in quadrant A11,968,5121,843,760
Events in quadrant B12,295,3871,970,137
Events in quadrant C12,913,5391,696,221
Events in quadrant D13,762,0851,670,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498263
B0505383
C0532003
D0556053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200935972.971184%
B200948434.195282%
C2009413056.494476%
D200946823.394048%

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 21398 20096 374 374 1.75% 1.86%
B 21399 20097 458 458 2.14% 2.28%
C 21399 20097 836 836 3.91% 4.16%
D 21399 20097 480 480 2.24% 2.39%

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 14 238 1050983 1980.3 2170 2117 529.6
A 3 14 986387 1858.34 2170 2117 529.6
A 13 248 593643 1116.83 2170 2117 529.6
B 4 236 1918091 4123.65 2167 2080 464.6
B 6 255 687759 1475.72 2167 2080 464.6
B 5 185 225918 481.75 2167 2080 464.6
C 2 12 3759114 6565.35 2099 2082 572.3
C 12 112 400574 696.36 2099 2082 572.3
C 14 254 205174 354.9 2099 2082 572.3
D 12 110 3004556 5063.52 2113 2022 593.0
D 11 129 1049191 1765.96 2113 2022 593.0
D 2 120 496165 833.33 2113 2022 593.0

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