ASTROSAT CZTI

Data Quality Report

Orbit 36285

Creation date: 2022-06-14T19:11:25.310064
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/AS1A10_071T35_9000005184_36285cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36285cztM0_level2_quad_clean.evt
Size (bytes)207,884,16045,558,720
Size198.3 MB 43.4 MB
Events in quadrant A1,209,506309,217
Events in quadrant B1,806,630304,457
Events in quadrant C1,719,694295,475
Events in quadrant D1,389,476291,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052321
B069311
C067271
D057421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248220.080580%
B24821234.955681%
C2482983.948429%
D2482321.289283%

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 2482 2482 0 0 0.00% 0.00%
B 2482 2482 84 84 3.38% 3.38%
C 2482 2482 81 81 3.26% 3.26%
D 2482 2482 17 17 0.68% 0.68%

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 89028 1460.89 288 283 60.7
A 13 254 4169 63.97 288 283 60.7
A 13 6 3416 51.57 288 283 60.7
B 4 171 375658 6729.01 278 271 55.8
B 5 172 171635 3071.79 278 271 55.8
B 5 255 109746 1962.4 278 271 55.8
C 0 207 289145 4458.0 274 275 64.8
C 0 10 255718 3942.14 274 275 64.8
C 15 214 104582 1609.72 274 275 64.8
D 12 6 115568 1638.81 282 274 70.4
D 7 223 70469 997.76 282 274 70.4
D 13 171 29828 420.09 282 274 70.4

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