ASTROSAT CZTI

Data Quality Report

Orbit 37688

Creation date: 2024-06-27T21:43:07.732220
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_075T01_9000005342_37688cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37688cztM0_level2_quad_clean.evt
Size (bytes)815,207,040128,036,160
Size777.4 MB 122.1 MB
Events in quadrant A6,445,880777,511
Events in quadrant B6,182,159797,842
Events in quadrant C5,326,519802,443
Events in quadrant D6,012,413761,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259234
B0253983
C0222663
D0251793

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10665300.281294%
B106654093.834974%
C10665500.468823%
D106652252.109705%

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 13470 10667 16 16 0.12% 0.15%
B 13469 10664 325 325 2.41% 3.05%
C 13469 10664 49 49 0.36% 0.46%
D 13469 10664 203 203 1.51% 1.90%

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 15 222 1085327 4468.06 1208 1181 242.6
A 10 83 555108 2282.88 1208 1181 242.6
A 13 248 47525 190.99 1208 1181 242.6
B 5 255 851520 3749.7 1189 1158 226.8
B 5 172 330972 1454.33 1189 1158 226.8
B 0 230 92448 402.55 1189 1158 226.8
C 15 214 453565 1643.22 1183 1188 275.3
C 0 10 97705 350.59 1183 1188 275.3
C 15 159 83113 297.58 1183 1188 275.3
D 12 227 549032 1929.71 1175 1142 283.9
D 13 249 292489 1026.15 1175 1142 283.9
D 2 153 277223 972.38 1175 1142 283.9

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