ASTROSAT CZTI

Data Quality Report

Orbit 14252

Creation date: 2024-06-27T16:52:30.675591
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/AS1G08_014T01_9000002104_14252cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14252cztM0_level2_quad_clean.evt
Size (bytes)742,798,080121,973,760
Size708.4 MB 116.3 MB
Events in quadrant A4,986,095780,567
Events in quadrant B5,737,797778,526
Events in quadrant C4,697,619746,562
Events in quadrant D6,433,614731,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209143
B0233442
C0198532
D0261712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94721511.594172%
B94723633.832348%
C9472270.285051%
D94721651.741976%

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 11018 9475 63 63 0.57% 0.66%
B 11018 9475 206 206 1.87% 2.17%
C 11018 9475 0 0 0.00% 0.00%
D 11018 9475 81 81 0.74% 0.85%

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 8 15 519405 2279.97 1131 1107 227.3
A 9 143 62303 269.2 1131 1107 227.3
A 12 189 34702 147.78 1131 1107 227.3
B 10 245 991019 4634.34 1117 1088 213.6
B 0 229 199013 926.58 1117 1088 213.6
B 0 182 76958 355.18 1117 1088 213.6
C 3 233 424460 1670.34 1095 1104 253.5
C 13 61 7992 27.18 1095 1104 253.5
C 10 22 3130 7.99 1095 1104 253.5
D 8 195 1477615 5650.0 1091 1062 261.3
D 5 222 291730 1112.24 1091 1062 261.3
D 1 52 282944 1078.62 1091 1062 261.3

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