ASTROSAT CZTI

Data Quality Report

Orbit 25973

Creation date: 2024-06-27T19:23:26.288417
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_068T01_9000003760_25973cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25973cztM0_level2_quad_clean.evt
Size (bytes)590,425,920106,750,080
Size563.1 MB 101.8 MB
Events in quadrant A3,617,703704,386
Events in quadrant B3,661,694701,255
Events in quadrant C3,792,178665,311
Events in quadrant D6,290,895629,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158030
B0159100
C0162300
D0240850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7649881.150477%
B76491141.490391%
C76461381.804865%
D764977210.092823%

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 8304 7651 0 0 0.00% 0.00%
B 8304 7651 0 0 0.00% 0.00%
C 8304 7651 0 0 0.00% 0.00%
D 8304 7651 592 592 7.13% 7.74%

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 13077 63.76 937 916 190.7
A 3 137 8724 40.93 937 916 190.7
A 0 226 8065 37.48 937 916 190.7
B 0 190 33287 180.53 923 899 179.4
B 12 111 22202 118.74 923 899 179.4
B 11 111 19830 105.52 923 899 179.4
C 3 233 208277 998.57 879 880 207.7
C 14 238 140254 671.06 879 880 207.7
C 2 16 10504 46.34 879 880 207.7
D 1 52 2630981 12622.48 863 843 208.4
D 7 80 324954 1555.46 863 843 208.4
D 13 168 36939 173.23 863 843 208.4

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