ASTROSAT CZTI

Data Quality Report

Orbit 41830

Creation date: 2024-06-27T22:33:19.730135
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_097T03_9000005706_41830cztM0_level2.fits modeM0/AS1A12_097T03_9000005706_41830cztM0_level2_quad_clean.evt
Size (bytes)135,457,92027,904,320
Size129.2 MB 26.6 MB
Events in quadrant A971,743194,168
Events in quadrant B883,317192,883
Events in quadrant C1,127,031172,597
Events in quadrant D1,891,548155,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040221
B038941
C044861
D068361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177470.394589%
B1774130.732807%
C17741176.595265%
D177424013.528749%

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 1774 1774 4 4 0.23% 0.23%
B 1774 1774 8 8 0.45% 0.45%
C 1774 1774 104 104 5.86% 5.86%
D 1774 1774 239 239 13.47% 13.47%

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 229718 5666.61 187 182 40.5
A 2 79 2892 66.89 187 182 40.5
A 13 254 2819 65.09 187 182 40.5
B 4 141 71055 1867.75 187 182 37.9
B 0 183 14407 374.88 187 182 37.9
B 0 186 14332 372.9 187 182 37.9
C 0 10 340285 7797.73 178 178 43.6
C 15 214 69164 1581.66 178 178 43.6
C 14 254 22223 505.43 178 178 43.6
D 5 222 739889 16301.81 178 172 45.4
D 13 249 238171 5245.0 178 172 45.4
D 12 79 68577 1507.5 178 172 45.4

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