ASTROSAT CZTI

Data Quality Report

Orbit 07816

Creation date: 2024-06-27T15:24:22.900592
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/AS1G06_077T02_9000001076_07816cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07816cztM0_level2_quad_clean.evt
Size (bytes)113,077,44035,020,800
Size107.8 MB 33.4 MB
Events in quadrant A802,683231,680
Events in quadrant B841,902239,708
Events in quadrant C831,474239,418
Events in quadrant D831,156225,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034672
B035401
C034951
D035731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1675160.955224%
B1675211.253731%
C167590.537313%
D167550.298507%

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 2940 1675 0 0 0.00% 0.00%
B 2940 1675 0 0 0.00% 0.00%
C 2940 1676 1 1 0.03% 0.06%
D 2940 1675 2 2 0.07% 0.12%

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 3 1 2240 47.68 207 203 42.7
A 0 226 1893 39.56 207 203 42.7
A 12 194 1739 35.95 207 203 42.7
B 4 173 13124 309.2 212 207 41.8
B 12 111 4092 93.0 212 207 41.8
B 4 81 3727 84.26 212 207 41.8
C 1 16 11034 217.68 209 211 49.7
C 12 4 2891 53.9 209 211 49.7
C 13 61 1681 29.57 209 211 49.7
D 12 221 31209 595.0 205 200 52.1
D 13 104 12068 227.72 205 200 52.1
D 2 152 5887 109.12 205 200 52.1

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