ASTROSAT CZTI

Data Quality Report

Orbit 00135

Creation date: 2024-06-27T13:56:51.402912
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/AS1P01_140T01_9000000004_00135cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00135cztM0_level2_quad_clean.evt
Size (bytes)683,254,08043,784,640
Size651.6 MB 41.8 MB
Events in quadrant A4,679,790269,819
Events in quadrant B4,773,326275,063
Events in quadrant C5,265,252266,148
Events in quadrant D5,725,270249,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165542
B0168321
C0182891
D0196801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A374740.106752%
B374770.186816%
C3747391.040833%
D37472135.684548%

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 5339 3749 97 97 1.82% 2.59%
B 5339 3749 109 109 2.04% 2.91%
C 5339 3749 542 542 10.15% 14.46%
D 5339 3749 588 588 11.01% 15.68%

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 15 106 19123 90.99 1180 1152 197.5
A 15 233 14194 66.03 1180 1152 197.5
A 14 171 14045 65.28 1180 1152 197.5
B 0 235 105628 404.84 1147 1147 258.1
B 8 236 81531 311.47 1147 1147 258.1
B 0 234 58648 222.8 1147 1147 258.1
C 3 32 1013940 3428.31 1040 1076 295.4
C 0 203 54269 180.05 1040 1076 295.4
C 4 253 45411 150.06 1040 1076 295.4
D 10 244 594024 2062.43 1083 1089 287.5
D 12 207 135486 467.48 1083 1089 287.5
D 14 34 126645 436.73 1083 1089 287.5

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