ASTROSAT CZTI

Data Quality Report

Orbit 23435

Creation date: 2024-06-27T18:54:45.281774
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_127T01_9000003468_23435cztM0_level2.evt modeM0/AS1A07_127T01_9000003468_23435cztM0_level2_quad_clean.evt
Size (bytes)488,793,60084,257,280
Size466.1 MB 80.4 MB
Events in quadrant A3,462,994538,698
Events in quadrant B3,641,082543,537
Events in quadrant C3,546,710520,247
Events in quadrant D3,730,155514,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139232
B0145042
C0142132
D0148243

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62231272.040816%
B62231392.233649%
C62231532.458621%
D62221272.041144%

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 7528 6223 0 0 0.00% 0.00%
B 7528 6223 2 2 0.03% 0.03%
C 7528 6223 0 0 0.00% 0.00%
D 7527 6222 24 24 0.32% 0.39%

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 9674 49.23 898 880 178.6
A 0 226 8013 39.93 898 880 178.6
A 3 137 7151 35.11 898 880 178.6
B 0 190 140411 862.76 875 858 161.8
B 0 189 40066 242.4 875 858 161.8
B 4 173 19905 117.75 875 858 161.8
C 14 238 137841 698.72 853 860 196.0
C 10 9 43580 217.91 853 860 196.0
C 0 207 20058 97.93 853 860 196.0
D 1 52 241460 1135.3 875 852 211.9
D 13 172 105012 491.48 875 852 211.9
D 12 233 41700 192.74 875 852 211.9

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