ASTROSAT CZTI

Data Quality Report

Orbit 11471

Creation date: 2024-06-27T16:13:25.147598
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/AS1A04_021T04_9000001682_11471cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11471cztM0_level2_quad_clean.evt
Size (bytes)780,192,000120,458,880
Size744.0 MB 114.9 MB
Events in quadrant A4,622,903745,143
Events in quadrant B7,862,494718,938
Events in quadrant C4,299,186802,934
Events in quadrant D6,212,253733,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197623
B0297102
C0190912
D0247482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93351161.242635%
B93358959.587574%
C9335350.374933%
D93353583.835029%

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 10516 9338 15 15 0.14% 0.16%
B 10516 9338 458 458 4.36% 4.90%
C 10516 9338 4 4 0.04% 0.04%
D 10516 9338 300 300 2.85% 3.21%

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 1 162 105585 463.68 1091 1065 225.4
A 14 235 62111 270.82 1091 1065 225.4
A 1 178 60218 262.42 1091 1065 225.4
B 4 81 1285432 6305.46 1064 1035 203.7
B 4 239 1256050 6161.22 1064 1035 203.7
B 15 204 538574 2638.93 1064 1035 203.7
C 0 207 37990 144.47 1091 1095 255.4
C 13 61 7900 26.65 1091 1095 255.4
C 12 4 5577 17.55 1091 1095 255.4
D 1 52 1030654 4015.5 1063 1032 256.4
D 10 253 249133 967.59 1063 1032 256.4
D 2 120 247563 961.46 1063 1032 256.4

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