ASTROSAT CZTI

Data Quality Report

Orbit 21214

Creation date: 2024-06-27T18:25:04.121625
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/AS1A06_005T05_9000003136_21214cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21214cztM0_level2_quad_clean.evt
Size (bytes)227,514,24024,048,000
Size217.0 MB 22.9 MB
Events in quadrant A1,786,341139,614
Events in quadrant B1,217,998148,348
Events in quadrant C1,203,467141,792
Events in quadrant D2,527,075134,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066171
B048681
C048371
D090021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A226228612.643678%
B2262472.077807%
C2262743.271441%
D226256424.933687%

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 3172 2262 216 216 6.81% 9.55%
B 3172 2262 1 1 0.03% 0.04%
C 3172 2262 0 0 0.00% 0.00%
D 3172 2262 430 430 13.56% 19.01%

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 15 236 634594 10383.76 294 288 61.1
A 11 47 11489 183.36 294 288 61.1
A 5 16 7476 117.67 294 288 61.1
B 0 244 12702 206.82 302 295 60.0
B 0 197 7452 119.3 302 295 60.0
B 12 111 7128 113.9 302 295 60.0
C 14 238 45254 632.86 292 293 71.0
C 3 233 16459 227.55 292 293 71.0
C 13 61 2063 24.91 292 293 71.0
D 1 52 973604 14750.8 266 259 66.0
D 13 174 288254 4364.49 266 259 66.0
D 7 238 192566 2914.36 266 259 66.0

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