ASTROSAT CZTI

Data Quality Report

Orbit 35704

Creation date: 2022-09-12T16:14:16.505057
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/AS1A09_142T03_9000005114_35704cztM0_level2.evt modeM0/AS1A09_142T03_9000005114_35704cztM0_level2_quad_clean.evt
Size (bytes)770,160,960115,934,400
Size734.5 MB 110.6 MB
Events in quadrant A5,068,522686,367
Events in quadrant B5,942,220698,160
Events in quadrant C5,708,345702,845
Events in quadrant D5,871,823673,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219794
B0246383
C0234133
D0247143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1083560.055376%
B108352131.965851%
C108351141.052146%
D108351121.033687%

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 13610 10837 0 0 0.00% 0.00%
B 13610 10836 140 140 1.03% 1.29%
C 13610 10837 100 100 0.73% 0.92%
D 13610 10837 111 111 0.82% 1.02%

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 231351 911.36 1248 1220 252.5
A 10 255 13986 50.56 1248 1220 252.5
A 3 137 13642 49.19 1248 1220 252.5
B 5 172 734499 3054.32 1235 1201 240.1
B 5 255 251511 1042.59 1235 1201 240.1
B 10 244 35337 142.18 1235 1201 240.1
C 15 214 453068 1590.19 1223 1231 284.1
C 0 10 404469 1419.15 1223 1231 284.1
C 14 128 68880 238.08 1223 1231 284.1
D 13 249 695902 2357.82 1221 1187 294.6
D 12 6 104600 350.98 1221 1187 294.6
D 2 153 89062 298.24 1221 1187 294.6

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