ASTROSAT CZTI

Data Quality Report

Orbit 20151116_P01_010T01_9000000108_level2

Creation date: 2025-10-23T14:22:18.384416
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_010T01_9000000108cztM0_level2.fits modeM0/AS1P01_010T01_9000000108cztM0_level2_quad_clean.evt
Size (bytes)2,432,448,0003,461,791,680
Size2.3 GB 3.2 GB
Events in quadrant A14,013,21822,404,829
Events in quadrant B13,839,49622,182,454
Events in quadrant C13,817,20821,317,937
Events in quadrant D11,345,05418,317,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061220
B061220
C061220
D061220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013062470
B014148950
C012893720
D014772250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30123835521.179134%
B30123787932.918964%
C30123935181.167843%
D301239247578.218391%

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 349518 301052 0 0 0.00% 0.00%
B 349518 301071 0 0 0.00% 0.00%
C 349518 301217 0 0 0.00% 0.00%
D 349518 300777 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 13247 11.83 3629 3384 834.0
A 0 29 12919 11.43 3629 3384 834.0
A 14 188 10643 8.7 3629 3384 834.0
B 2 9 11275 11.85 3664 3474 658.3
B 14 254 9298 8.85 3664 3474 658.3
B 10 225 8756 8.02 3664 3474 658.3
C 12 241 9351 6.78 3658 3368 882.4
C 2 191 9275 6.69 3658 3368 882.4
C 9 242 8915 6.29 3658 3368 882.4
D 6 44 8537 7.25 3255 2974 767.8
D 6 231 8346 7.0 3255 2974 767.8
D 11 82 8276 6.91 3255 2974 767.8

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