ASTROSAT CZTI

Data Quality Report

Orbit 07925

Creation date: 2024-06-27T15:25:34.869082
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/AS1A02_027T01_9000001084_07925cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07925cztM0_level2_quad_clean.evt
Size (bytes)1,745,740,800298,483,200
Size1.6 GB 284.7 MB
Events in quadrant A11,806,5111,792,167
Events in quadrant B13,380,7901,842,492
Events in quadrant C13,009,4691,867,502
Events in quadrant D12,937,4451,771,361

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05202
B05202
C05190
D05202

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053037150
B056677155
C056321207
D056506179

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256806972.714174%
B256798833.438607%
C256764801.869450%
D256806692.605140%

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 26697 25715 2 2 0.01% 0.01%
B 26697 25717 156 156 0.58% 0.61%
C 26697 25713 0 0 0.00% 0.00%
D 26697 25711 56 56 0.21% 0.22%

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 15 234 102931 161.38 3022 2945 619.6
A 8 15 34765 51.36 3022 2945 619.6
A 0 226 28365 41.03 3022 2945 619.6
B 10 16 502840 860.13 3040 2964 581.2
B 4 239 458176 783.28 3040 2964 581.2
B 11 51 306888 522.96 3040 2964 581.2
C 1 16 1435526 2088.27 2959 2966 686.0
C 13 61 22974 29.17 2959 2966 686.0
C 8 128 16655 19.95 2959 2966 686.0
D 5 233 679704 934.01 2947 2844 724.7
D 1 52 636059 873.79 2947 2844 724.7
D 13 104 141828 191.79 2947 2844 724.7

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