ASTROSAT CZTI

Data Quality Report

Orbit 20210715_A10_101T01_9000004546_level2

Creation date: 2021-07-19T12:43:40.026890
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_101T01_9000004546cztM0_level2_bc.evt modeM0/AS1A10_101T01_9000004546cztM0_level2_quad_clean.evt
Size (bytes)5,470,096,3201,528,755,840
Size5.1 GB 1.4 GB
Events in quadrant A26,074,7149,873,796
Events in quadrant B59,192,6839,792,852
Events in quadrant C35,540,2619,158,804
Events in quadrant D36,759,3929,314,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480740
B03663140
C02943660
D02792070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024240
B024240
C024240
D024240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02130
B02130
C02130
D02130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11916613271.113573%
B11916530402.551085%
C11916664835.440310%
D11916613831.160566%

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 140276 119172 0 0 0.00% 0.00%
B 140276 119166 18 18 0.01% 0.02%
C 140276 119168 212 212 0.15% 0.18%
D 140276 119169 92 92 0.07% 0.08%

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 13 254 228584 154.64 6749 6654 1435.1
A 0 226 42447 24.94 6749 6654 1435.1
A 12 194 40429 23.53 6749 6654 1435.1
B 6 159 31348720 25039.52 6693 6549 1251.7
B 0 190 719597 569.66 6693 6549 1251.7
B 4 80 625190 494.24 6693 6549 1251.7
C 3 233 9338335 6415.33 6242 6223 1454.7
C 0 10 1237058 846.13 6242 6223 1454.7
C 14 254 316192 213.09 6242 6223 1454.7
D 8 195 9573641 6501.88 6550 6358 1471.5
D 10 203 582414 391.48 6550 6358 1471.5
D 2 250 567459 381.32 6550 6358 1471.5

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