ASTROSAT CZTI

Data Quality Report

Orbit 59375

Creation date: 2026-09-18T05:44:26.393341
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_59375cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59375cztM0_level2_quad_clean.evt
Size (bytes)574,453,440123,716,160
Size547.8 MB 118.0 MB
Events in quadrant A5,390,187798,305
Events in quadrant B4,592,179872,639
Events in quadrant C4,352,224791,052
Events in quadrant D6,278,085700,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221431
B0195671
C0190001
D0246541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83982673.179328%
B83992032.416954%
C8399871.035838%
D83985146.120505%

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 8448 8399 61 61 0.72% 0.73%
B 8449 8400 63 63 0.75% 0.75%
C 8449 8400 42 42 0.50% 0.50%
D 8448 8399 333 333 3.94% 3.96%

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 15 233 1643365 7005.59 950 923 234.4
A 14 238 25537 104.99 950 923 234.4
A 3 245 23374 95.76 950 923 234.4
B 5 236 228964 1110.83 948 909 205.3
B 5 185 204049 989.48 948 909 205.3
B 10 247 118431 572.44 948 909 205.3
C 6 223 158019 607.62 945 938 258.5
C 12 252 124410 477.61 945 938 258.5
C 3 233 120961 464.27 945 938 258.5
D 12 110 1907690 7335.1 918 878 260.0
D 2 120 174469 667.77 918 878 260.0
D 11 224 162003 619.81 918 878 260.0

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