ASTROSAT CZTI

Data Quality Report

Orbit 24404

Creation date: 2024-06-27T19:05:38.719617
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/AS1A07_001T01_9000003598_24404cztM0_level2.evt modeM0/AS1A07_001T01_9000003598_24404cztM0_level2_quad_clean.evt
Size (bytes)99,642,24029,151,360
Size95.0 MB 27.8 MB
Events in quadrant A658,585203,275
Events in quadrant B676,707210,194
Events in quadrant C661,993193,493
Events in quadrant D935,487184,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026941
B027541
C027011
D036181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120620.165837%
B120650.414594%
C120690.746269%
D1206171.409619%

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 1206 1206 0 0 0.00% 0.00%
B 1206 1206 0 0 0.00% 0.00%
C 1206 1206 0 0 0.00% 0.00%
D 1206 1206 17 17 1.41% 1.41%

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 13 254 2125 55.1 170 168 35.5
A 0 226 1515 37.92 170 168 35.5
A 3 137 1397 34.6 170 168 35.5
B 0 229 3467 96.47 172 168 34.2
B 12 111 3371 93.67 172 168 34.2
B 11 111 3134 86.74 172 168 34.2
C 14 238 26572 704.79 157 159 37.5
C 2 16 10661 280.23 157 159 37.5
C 7 247 8249 215.87 157 159 37.5
D 1 52 310545 7889.68 157 152 39.3
D 12 238 11986 300.8 157 152 39.3
D 12 218 9868 246.96 157 152 39.3

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