ASTROSAT CZTI

Data Quality Report

Orbit 25522

Creation date: 2024-06-27T19:18:37.163276
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/AS1A07_147T01_9000003722_25522cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25522cztM0_level2_quad_clean.evt
Size (bytes)497,931,84097,706,880
Size474.9 MB 93.2 MB
Events in quadrant A3,416,416638,960
Events in quadrant B3,443,971644,636
Events in quadrant C3,401,000602,977
Events in quadrant D4,349,977591,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142220
B0142870
C0141940
D0171600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68951452.102973%
B68951732.509065%
C68961862.697216%
D68963054.422854%

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 7555 6896 0 0 0.00% 0.00%
B 7555 6896 0 0 0.00% 0.00%
C 7556 6897 0 0 0.00% 0.00%
D 7556 6897 118 118 1.56% 1.71%

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 9609 48.96 885 867 178.6
A 3 137 8211 41.13 885 867 178.6
A 0 226 7527 37.3 885 867 178.6
B 12 111 20503 118.05 871 852 166.5
B 11 111 18955 108.75 871 852 166.5
B 0 190 18748 107.51 871 852 166.5
C 14 238 134108 688.16 835 839 193.7
C 3 233 6790 30.73 835 839 193.7
C 13 61 5684 25.02 835 839 193.7
D 1 52 840951 4146.13 840 818 202.6
D 8 195 242380 1192.13 840 818 202.6
D 13 104 51098 248.14 840 818 202.6

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