ASTROSAT CZTI

Data Quality Report

Orbit 20220323_A11_046T08_9000005024_level2

Creation date: 2022-03-29T13:59:12.318551
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/AS1A11_046T08_9000005024cztM0_level2_bc.evt modeM0/AS1A11_046T08_9000005024cztM0_level2_quad_clean.evt
Size (bytes)1,305,898,560475,629,120
Size1.2 GB 453.6 MB
Events in quadrant A5,959,0423,156,503
Events in quadrant B7,492,3593,202,448
Events in quadrant C6,481,5923,293,875
Events in quadrant D17,848,4742,969,954

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556690
B0620610
C0540210
D0937910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259434211.622788%
B2594310243.947115%
C25943980.377751%
D2594316906.514281%

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 33376 25947 31 31 0.09% 0.12%
B 33376 25942 37 37 0.11% 0.14%
C 33377 25943 2 2 0.01% 0.01%
D 33376 25942 126 126 0.38% 0.49%

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 15 237 513805 1821.68 1266 1247 281.4
A 10 83 250168 884.69 1266 1247 281.4
A 9 143 140260 494.06 1266 1247 281.4
B 5 172 1553449 6078.15 1275 1246 255.4
B 0 182 468669 1830.35 1275 1246 255.4
B 0 190 157281 611.01 1275 1246 255.4
C 15 214 1023247 3387.46 1289 1282 301.7
C 0 10 280396 925.17 1289 1282 301.7
C 14 67 60210 195.33 1289 1282 301.7
D 8 195 8620384 28318.57 1247 1205 304.4
D 1 47 996499 3270.07 1247 1205 304.4
D 2 250 985628 3234.35 1247 1205 304.4

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