ASTROSAT CZTI

Data Quality Report

Orbit 30898

Creation date: 2024-06-27T20:20:56.039728
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/AS1C06_004T01_9000004466_30898cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30898cztM0_level2_quad_clean.evt
Size (bytes)1,572,154,560227,911,680
Size1.5 GB 217.4 MB
Events in quadrant A8,686,8131,464,752
Events in quadrant B15,554,3201,431,960
Events in quadrant C9,217,6291,363,065
Events in quadrant D12,915,9331,376,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375073
B0589174
C0389253
D0505093

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183792001.088198%
B183794292.334186%
C183798244.483378%
D183794652.530061%

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 20259 18379 3 3 0.01% 0.02%
B 20259 18379 50 50 0.25% 0.27%
C 20259 18379 31 31 0.15% 0.17%
D 20259 18380 312 312 1.54% 1.70%

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 11 47 95539 211.85 2206 2159 440.8
A 0 13 78431 173.04 2206 2159 440.8
A 13 254 34776 74.0 2206 2159 440.8
B 6 159 5297284 12932.86 2161 2105 409.4
B 6 36 895293 2181.51 2161 2105 409.4
B 0 190 272884 661.35 2161 2105 409.4
C 14 238 487709 1007.86 2058 2063 481.9
C 14 254 225011 462.68 2058 2063 481.9
C 0 10 194857 400.1 2058 2063 481.9
D 8 195 2160904 4388.71 2099 2049 491.9
D 1 52 1275024 2587.81 2099 2049 491.9
D 12 233 456028 922.89 2099 2049 491.9

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