ASTROSAT CZTI

Data Quality Report

Orbit 20220401_T05_016T01_9000005048_level2

Creation date: 2026-01-02T10:10:45.696735
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/AS1T05_016T01_9000005048cztM0_level2.fits modeM0/AS1T05_016T01_9000005048cztM0_level2_quad_clean.evt
Size (bytes)76,426,56084,196,800
Size72.9 MB 80.3 MB
Events in quadrant A494,534619,860
Events in quadrant B357,498364,074
Events in quadrant C483,288583,783
Events in quadrant D352,726357,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181500
B0497190
C0188280
D0529760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8980110.122494%
B8980443949.432071%
C8980460.512249%
D8980303633.808463%

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 10443 8980 0 0 0.00% 0.00%
B 10443 8950 0 0 0.00% 0.00%
C 10443 8980 0 0 0.00% 0.00%
D 10443 8959 0 0 0.00% 0.00%

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 7 110 427 9.21 128 121 33.2
A 9 19 414 8.82 128 121 33.2
A 0 29 379 7.76 128 121 33.2
B 2 9 320 11.19 94 90 20.6
B 3 80 282 9.34 94 90 20.6
B 5 255 262 8.37 94 90 20.6
C 9 233 364 7.14 128 120 34.2
C 3 187 327 6.05 128 120 34.2
C 1 65 310 5.56 128 120 34.2
D 6 62 278 6.56 100 92 28.4
D 6 38 260 5.92 100 92 28.4
D 6 83 258 5.85 100 92 28.4

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