ASTROSAT CZTI

Data Quality Report

Orbit 25384

Creation date: 2024-06-27T19:17:04.328850
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/AS1A09_057T04_9000003712_25384cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25384cztM0_level2_quad_clean.evt
Size (bytes)480,588,48095,362,560
Size458.3 MB 90.9 MB
Events in quadrant A3,280,813617,645
Events in quadrant B3,239,312625,564
Events in quadrant C3,584,696601,908
Events in quadrant D4,004,890585,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138110
B0136400
C0147270
D0161070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6548140.213806%
B6548290.442883%
C65481632.489310%
D65482293.497251%

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 7608 6549 0 0 0.00% 0.00%
B 7608 6548 0 0 0.00% 0.00%
C 7608 6549 55 55 0.72% 0.84%
D 7608 6549 185 185 2.43% 2.82%

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 6 16 91430 553.57 819 802 163.7
A 15 173 25688 152.01 819 802 163.7
A 13 254 9211 51.36 819 802 163.7
B 12 111 19411 120.82 812 792 154.1
B 0 190 18075 112.15 812 792 154.1
B 11 111 17163 106.23 812 792 154.1
C 9 54 295914 1577.86 796 803 187.0
C 14 238 126495 672.03 796 803 187.0
C 3 233 53307 280.72 796 803 187.0
D 7 238 554375 2858.11 802 779 193.7
D 1 52 251052 1292.11 802 779 193.7
D 8 195 115940 594.55 802 779 193.7

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