ASTROSAT CZTI

Data Quality Report

Orbit 41178

Creation date: 2024-06-27T22:25:33.724341
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/AS1A12_101T04_9000005610_41178cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41178cztM0_level2_quad_clean.evt
Size (bytes)166,498,56032,495,040
Size158.8 MB 31.0 MB
Events in quadrant A1,193,219231,520
Events in quadrant B1,852,635212,742
Events in quadrant C1,960,231182,105
Events in quadrant D991,306205,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047941
B069241
C071841
D044541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209970.333492%
B209926412.577418%
C209938918.532635%
D2099110.524059%

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 3381 2100 3 3 0.09% 0.14%
B 3381 2100 194 194 5.74% 9.24%
C 3381 2100 322 322 9.52% 15.33%
D 3381 2100 10 10 0.30% 0.48%

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 10 83 240387 4797.9 233 228 50.1
A 12 189 28758 569.97 233 228 50.1
A 2 79 12764 250.44 233 228 50.1
B 0 245 536857 11806.68 221 215 45.5
B 0 186 169974 3734.87 221 215 45.5
B 0 229 157153 3452.8 221 215 45.5
C 9 54 899557 17923.13 206 207 50.2
C 0 10 164934 3282.84 206 207 50.2
C 15 214 83439 1658.73 206 207 50.2
D 13 249 68102 1173.68 225 218 57.8
D 2 249 29520 506.62 225 218 57.8
D 2 234 11758 199.52 225 218 57.8

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