ASTROSAT CZTI

Data Quality Report

Orbit 01082

Creation date: 2025-06-30T11:30:15.868028
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/AS1P01_999T99_9000000194_01082cztM0_level2.fits modeM0/AS1P01_999T99_9000000194_01082cztM0_level2_quad_clean.evt
Size (bytes)123,900,48012,107,520
Size118.2 MB 11.5 MB
Events in quadrant A1,162,87979,014
Events in quadrant B1,247,83980,896
Events in quadrant C1,120,20979,246
Events in quadrant D965,97276,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042770
B044830
C041250
D036960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112500.000000%
B112540.355556%
C112500.000000%
D112500.000000%

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 1125 1125 5 5 0.44% 0.44%
B 1125 1125 19 19 1.69% 1.69%
C 1125 1125 4 4 0.36% 0.36%
D 1125 1125 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 3 111 1017 9.46 303 306 75.1
A 14 203 778 6.28 303 306 75.1
A -1 -1 -1 -1.0 303 306 75.1
B 5 191 17205 215.28 319 322 78.4
B 5 184 15195 189.65 319 322 78.4
B 4 232 2424 26.8 319 322 78.4
C 15 241 53109 685.23 271 279 77.1
C 3 111 3412 40.63 271 279 77.1
C 3 79 2549 29.44 271 279 77.1
D 2 216 3791 43.14 257 264 81.8
D 15 13 1348 13.26 257 264 81.8
D 13 13 1163 10.99 257 264 81.8

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