ASTROSAT CZTI

Data Quality Report

Orbit 33677

Creation date: 2024-06-27T20:51:24.308143
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/AS1T04_076T01_9000004810_33677cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33677cztM0_level2_quad_clean.evt
Size (bytes)1,543,250,880104,843,520
Size1.4 GB 100.0 MB
Events in quadrant A22,157,285125,294
Events in quadrant B7,718,816762,854
Events in quadrant C8,225,521783,628
Events in quadrant D7,904,530748,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0732784
B0297903
C0317023
D0310353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108491048096.598765%
B108497426.839340%
C108494884.498110%
D108503543.262673%

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 13564 10849 6823 6823 50.30% 62.89%
B 13565 10851 619 619 4.56% 5.70%
C 13565 10851 470 470 3.46% 4.33%
D 13566 10852 322 322 2.37% 2.97%

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 15 169 21160263 459390.67 221 217 46.1
A 15 237 132757 2877.48 221 217 46.1
A 13 6 5654 118.04 221 217 46.1
B 5 172 2385447 9954.26 1241 1209 239.5
B 4 170 113498 468.81 1241 1209 239.5
B 0 244 70916 291.03 1241 1209 239.5
C 3 233 2629059 9298.64 1226 1234 282.6
C 15 214 463220 1634.75 1226 1234 282.6
C 0 10 307156 1082.51 1226 1234 282.6
D 8 195 1197655 3908.16 1239 1203 306.1
D 7 80 472676 1540.05 1239 1203 306.1
D 13 249 353454 1150.61 1239 1203 306.1

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