ASTROSAT CZTI

Data Quality Report

Orbit 20190609_A05_022T08_9000002980_level2

Creation date: 2025-12-01T08:28:48.821524
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/AS1A05_022T08_9000002980cztM0_level2.fits modeM0/AS1A05_022T08_9000002980cztM0_level2_quad_clean.evt
Size (bytes)141,880,320139,956,480
Size135.3 MB 133.5 MB
Events in quadrant A838,114815,207
Events in quadrant B859,238868,971
Events in quadrant C858,564809,744
Events in quadrant D749,504753,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454500
B0311610
C0322290
D0392590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14350202614.118467%
B143501791.247387%
C143503562.480836%
D143507235.038328%

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 16454 14259 0 0 0.00% 0.00%
B 16455 14347 0 0 0.00% 0.00%
C 16454 14346 0 0 0.00% 0.00%
D 16455 14343 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 0 29 763 10.07 218 206 55.3
A 9 19 657 8.16 218 206 55.3
A 7 110 644 7.92 218 206 55.3
B 2 9 688 9.78 227 217 48.2
B 2 8 593 7.81 227 217 48.2
B 14 254 567 7.27 227 217 48.2
C 3 126 600 6.47 227 213 59.8
C 12 241 597 6.42 227 213 59.8
C 3 187 582 6.17 227 213 59.8
D 15 46 574 6.53 214 196 57.9
D 10 189 544 6.01 214 196 57.9
D 6 67 529 5.75 214 196 57.9

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