ASTROSAT CZTI

Data Quality Report

Orbit 27592

Creation date: 2024-06-27T19:41:56.672581
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/AS1T03_257T01_9000003976_27592cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27592cztM0_level2_quad_clean.evt
Size (bytes)637,842,240104,261,760
Size608.3 MB 99.4 MB
Events in quadrant A4,159,151658,358
Events in quadrant B4,364,894667,099
Events in quadrant C4,449,684635,025
Events in quadrant D5,772,932611,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175570
B0180590
C0183960
D0228300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84201481.757720%
B84202192.600950%
C84202613.099762%
D84202222.636580%

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 10215 8422 0 0 0.00% 0.00%
B 10215 8422 11 11 0.11% 0.13%
C 10215 8422 45 45 0.44% 0.53%
D 10215 8422 93 93 0.91% 1.10%

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 13078 55.64 1076 1052 216.1
A 8 192 10875 45.45 1076 1052 216.1
A 3 137 10422 43.35 1076 1052 216.1
B 15 32 53361 253.41 1069 1040 206.5
B 0 230 49782 236.08 1069 1040 206.5
B 0 245 32836 154.0 1069 1040 206.5
C 2 16 268742 1106.31 1028 1032 242.0
C 14 238 162468 667.13 1028 1032 242.0
C 13 61 6974 24.56 1028 1032 242.0
D 1 52 1546696 6264.53 1033 1004 246.7
D 2 250 122233 491.33 1033 1004 246.7
D 12 227 87593 350.94 1033 1004 246.7

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