ASTROSAT CZTI

Data Quality Report

Orbit 53711

Creation date: 2025-09-02T04:07:44.750793
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/AS1A14_022T04_9000006506_53711cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53711cztM0_level2_quad_clean.evt
Size (bytes)1,432,679,040119,957,760
Size1.3 GB 114.4 MB
Events in quadrant A19,238,969516,184
Events in quadrant B5,722,0331,043,045
Events in quadrant C18,950,121487,280
Events in quadrant D8,301,994848,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0645821
B0245651
C0635737
D0322141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10629538550.663280%
B106291321.241885%
C10629540550.851444%
D106297136.708063%

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 10809 10630 4983 4983 46.10% 46.88%
B 10809 10630 37 37 0.34% 0.35%
C 10809 10630 5138 5138 47.53% 48.33%
D 10809 10630 698 698 6.46% 6.57%

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 63 10268481 50168.96 821 800 204.7
A 3 78 3764596 18390.3 821 800 204.7
A 15 174 513064 2502.98 821 800 204.7
B 7 0 869962 3762.69 1085 1048 230.9
B 0 213 153292 659.27 1085 1048 230.9
B 7 252 99967 428.35 1085 1048 230.9
C 1 241 7907694 37071.95 770 763 213.3
C 15 224 4060080 19032.27 770 763 213.3
C 6 13 1904763 8926.98 770 763 213.3
D 7 70 958337 3240.87 1042 995 295.4
D 8 176 873589 2953.97 1042 995 295.4
D 1 241 714367 2414.96 1042 995 295.4

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